Make atari documentation consistent (#418)

2025-07-31 05:44:31 +00:00 · 2023-03-30 15:49:37 +01:00
parent 46af646be1
commit 7fa9702cd4
105 changed files with 632 additions and 790 deletions
--- a/docs/environments/atari/adventure.md
+++ b/docs/environments/atari/adventure.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (250, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (250, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Adventure-v5")` |

 For more Adventure variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Adventure has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Adventure has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Adventure uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As Adventure uses the full set of actions then specifying `full_action_space=Tru

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/air_raid.md
+++ b/docs/environments/atari/air_raid.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(6) |
-| Observation Shape | (250, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (250, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/AirRaid-v5")` |

 For more AirRaid variants with different observation and action spaces, see the variants section.
@@ -27,8 +25,7 @@ You control a ship that can move sideways. You must protect two buildings (one o

 ## Actions

-AirRaid has the action space `Discrete(6)` with the table below lists the meaning of each action's meanings.
-As AirRaid uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+AirRaid has the action space of `Discrete(6)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -39,13 +36,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/alien.md
+++ b/docs/environments/atari/alien.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Alien-v5")` |

 For more Alien variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Alien has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Alien has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Alien uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As Alien uses the full set of actions then specifying `full_action_space=True` w

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You score points by destroying eggs, killing aliens, using pulsars, and collecting special prizes. When you are caught
--- a/docs/environments/atari/amidar.md
+++ b/docs/environments/atari/amidar.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(10) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Amidar-v5")` |

 For more Amidar variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Amidar has the action space `Discrete(10)` with the table below lists the meaning of each action's meanings.
-As Amidar uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Amidar has the action space of `Discrete(10)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -43,13 +40,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You score points by traversing new parts of the grid. Coloring an entire box in the maze or catching chickens gives extra points.
--- a/docs/environments/atari/assault.md
+++ b/docs/environments/atari/assault.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(7) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Assault-v5")` |

 For more Assault variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Assault has the action space `Discrete(7)` with the table below lists the meaning of each action's meanings.
-As Assault uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Assault has the action space of `Discrete(7)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -42,13 +39,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/asterix.md
+++ b/docs/environments/atari/asterix.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(9) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Asterix-v5")` |

 For more Asterix variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Asterix has the action space `Discrete(9)` with the table below lists the meaning of each action's meanings.
-As Asterix uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Asterix has the action space of `Discrete(9)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -42,13 +39,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 A table of scores awarded for collecting the different objects is provided on [the AtariAge page](https://atariage.com/manual_html_page.php?SoftwareID=3325).
--- a/docs/environments/atari/asteroids.md
+++ b/docs/environments/atari/asteroids.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(14) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Asteroids-v5")` |

 For more Asteroids variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Asteroids has the action space `Discrete(14)` with the table below lists the meaning of each action's meanings.
-As Asteroids uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Asteroids has the action space of `Discrete(14)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -44,13 +41,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You score points for destroying asteroids, satellites and UFOs. The smaller the asteroid, the more points you score
--- a/docs/environments/atari/atlantis.md
+++ b/docs/environments/atari/atlantis.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(4) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Atlantis-v5")` |

 For more Atlantis variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Atlantis has the action space `Discrete(4)` with the table below lists the meaning of each action's meanings.
-As Atlantis uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Atlantis has the action space of `Discrete(4)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -41,13 +38,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You score points for destroying enemies, keeping installations protected during attack waves. You score more points
--- a/docs/environments/atari/atlantis2.md
+++ b/docs/environments/atari/atlantis2.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(4) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Atlantis2-v5")` |

 For more Atlantis2 variants with different observation and action spaces, see the variants section.
@@ -27,8 +25,7 @@ Atlantis2 is missing description documentation. If you are interested in writing

 ## Actions

-Atlantis2 has the action space `Discrete(4)` with the table below lists the meaning of each action's meanings.
-As Atlantis2 uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Atlantis2 has the action space of `Discrete(4)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -39,13 +36,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/backgammon.md
+++ b/docs/environments/atari/backgammon.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(3) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Backgammon-v5")` |

 For more Backgammon variants with different observation and action spaces, see the variants section.
@@ -27,8 +25,7 @@ Backgammon is missing description documentation. If you are interested in writin

 ## Actions

-Backgammon has the action space `Discrete(3)` with the table below lists the meaning of each action's meanings.
-As Backgammon uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Backgammon has the action space of `Discrete(3)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -38,13 +35,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/bank_heist.md
+++ b/docs/environments/atari/bank_heist.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/BankHeist-v5")` |

 For more BankHeist variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-BankHeist has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+BankHeist has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As BankHeist uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As BankHeist uses the full set of actions then specifying `full_action_space=Tru

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You score points for robbing banks and destroying police cars. If you rob nine or more banks, and then leave the city,
--- a/docs/environments/atari/basic_math.md
+++ b/docs/environments/atari/basic_math.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(6) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/BasicMath-v5")` |

 For more BasicMath variants with different observation and action spaces, see the variants section.
@@ -27,8 +25,7 @@ BasicMath is missing description documentation. If you are interested in writing

 ## Actions

-BasicMath has the action space `Discrete(6)` with the table below lists the meaning of each action's meanings.
-As BasicMath uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+BasicMath has the action space of `Discrete(6)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -39,13 +36,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/battle_zone.md
+++ b/docs/environments/atari/battle_zone.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/BattleZone-v5")` |

 For more BattleZone variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-BattleZone has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+BattleZone has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As BattleZone uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As BattleZone uses the full set of actions then specifying `full_action_space=Tr

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You receive points for destroying enemies.
--- a/docs/environments/atari/beam_rider.md
+++ b/docs/environments/atari/beam_rider.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(9) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/BeamRider-v5")` |

 For more BeamRider variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-BeamRider has the action space `Discrete(9)` with the table below lists the meaning of each action's meanings.
-As BeamRider uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+BeamRider has the action space of `Discrete(9)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -42,13 +39,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You score points for destroying enemies.
--- a/docs/environments/atari/berzerk.md
+++ b/docs/environments/atari/berzerk.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Berzerk-v5")` |

 For more Berzerk variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Berzerk has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Berzerk has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Berzerk uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As Berzerk uses the full set of actions then specifying `full_action_space=True`

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You score points for destroying robots.
--- a/docs/environments/atari/blackjack.md
+++ b/docs/environments/atari/blackjack.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(4) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Blackjack-v5")` |

 For more Blackjack variants with different observation and action spaces, see the variants section.
@@ -27,8 +25,7 @@ Blackjack is missing description documentation. If you are interested in writing

 ## Actions

-Blackjack has the action space `Discrete(4)` with the table below lists the meaning of each action's meanings.
-As Blackjack uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Blackjack has the action space of `Discrete(4)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -39,13 +36,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/bowling.md
+++ b/docs/environments/atari/bowling.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(6) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Bowling-v5")` |

 For more Bowling variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Bowling has the action space `Discrete(6)` with the table below lists the meaning of each action's meanings.
-As Bowling uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Bowling has the action space of `Discrete(6)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -41,13 +38,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You receive points for knocking down pins. The exact score depends on whether you manage a "strike", "spare" or "open"
--- a/docs/environments/atari/boxing.md
+++ b/docs/environments/atari/boxing.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Boxing-v5")` |

 For more Boxing variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Boxing has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Boxing has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Boxing uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As Boxing uses the full set of actions then specifying `full_action_space=True`

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You score points by landing punches.
--- a/docs/environments/atari/breakout.md
+++ b/docs/environments/atari/breakout.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(4) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Breakout-v5")` |

 For more Breakout variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Breakout has the action space `Discrete(4)` with the table below lists the meaning of each action's meanings.
-As Breakout uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Breakout has the action space of `Discrete(4)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -41,13 +38,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You score points by destroying bricks in the wall. The reward for destroying a brick depends on the color of the brick.
--- a/docs/environments/atari/carnival.md
+++ b/docs/environments/atari/carnival.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(6) |
-| Observation Shape | (214, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (214, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Carnival-v5")` |

 For more Carnival variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Carnival has the action space `Discrete(6)` with the table below lists the meaning of each action's meanings.
-As Carnival uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Carnival has the action space of `Discrete(6)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -41,13 +38,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You score points by destroying targets. Points (or bullets) may be subtracted if you hit the target when it shows a minus sign.
--- a/docs/environments/atari/casino.md
+++ b/docs/environments/atari/casino.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(4) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Casino-v5")` |

 For more Casino variants with different observation and action spaces, see the variants section.
@@ -27,8 +25,7 @@ Casino is missing description documentation. If you are interested in writing up

 ## Actions

-Casino has the action space `Discrete(4)` with the table below lists the meaning of each action's meanings.
-As Casino uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Casino has the action space of `Discrete(4)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -39,13 +36,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/centipede.md
+++ b/docs/environments/atari/centipede.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Centipede-v5")` |

 For more Centipede variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Centipede has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Centipede has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Centipede uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As Centipede uses the full set of actions then specifying `full_action_space=Tru

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You score points by hitting centipedes, scorpions, fleas and spiders. Additional points are awarded after every round
--- a/docs/environments/atari/chopper_command.md
+++ b/docs/environments/atari/chopper_command.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/ChopperCommand-v5")` |

 For more ChopperCommand variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-ChopperCommand has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+ChopperCommand has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As ChopperCommand uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As ChopperCommand uses the full set of actions then specifying `full_action_spac

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You score points by destroying planes and other helicopters. You score extra points at the end of every wave, depending on the number
--- a/docs/environments/atari/crazy_climber.md
+++ b/docs/environments/atari/crazy_climber.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(9) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/CrazyClimber-v5")` |

 For more CrazyClimber variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-CrazyClimber has the action space `Discrete(9)` with the table below lists the meaning of each action's meanings.
-As CrazyClimber uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+CrazyClimber has the action space of `Discrete(9)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -42,13 +39,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 A table of scores awarded for completing each row of a building is provided on [the AtariAge page](https://atariage.com/manual_html_page.php?SoftwareLabelID=113).
--- a/docs/environments/atari/crossbow.md
+++ b/docs/environments/atari/crossbow.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Crossbow-v5")` |

 For more Crossbow variants with different observation and action spaces, see the variants section.
@@ -27,7 +25,7 @@ Crossbow is missing description documentation. If you are interested in writing

 ## Actions

-Crossbow has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Crossbow has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Crossbow uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -41,13 +39,14 @@ As Crossbow uses the full set of actions then specifying `full_action_space=True

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/darkchambers.md
+++ b/docs/environments/atari/darkchambers.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Darkchambers-v5")` |

 For more Darkchambers variants with different observation and action spaces, see the variants section.
@@ -27,7 +25,7 @@ Darkchambers is missing description documentation. If you are interested in writ

 ## Actions

-Darkchambers has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Darkchambers has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Darkchambers uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -41,13 +39,14 @@ As Darkchambers uses the full set of actions then specifying `full_action_space=

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/defender.md
+++ b/docs/environments/atari/defender.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Defender-v5")` |

 For more Defender variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Defender has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Defender has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Defender uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As Defender uses the full set of actions then specifying `full_action_space=True

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You receive points for destroying enemies, rescuing abducted humans and keeping humans alive.
--- a/docs/environments/atari/demon_attack.md
+++ b/docs/environments/atari/demon_attack.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(6) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/DemonAttack-v5")` |

 For more DemonAttack variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-DemonAttack has the action space `Discrete(6)` with the table below lists the meaning of each action's meanings.
-As DemonAttack uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+DemonAttack has the action space of `Discrete(6)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -41,13 +38,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 Each enemy you slay gives you points. The amount of points depends on the type of demon and which
--- a/docs/environments/atari/donkey_kong.md
+++ b/docs/environments/atari/donkey_kong.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/DonkeyKong-v5")` |

 For more DonkeyKong variants with different observation and action spaces, see the variants section.
@@ -27,7 +25,7 @@ DonkeyKong is missing description documentation. If you are interested in writin

 ## Actions

-DonkeyKong has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+DonkeyKong has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As DonkeyKong uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -41,13 +39,14 @@ As DonkeyKong uses the full set of actions then specifying `full_action_space=Tr

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/double_dunk.md
+++ b/docs/environments/atari/double_dunk.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/DoubleDunk-v5")` |

 For more DoubleDunk variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-DoubleDunk has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+DoubleDunk has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As DoubleDunk uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As DoubleDunk uses the full set of actions then specifying `full_action_space=Tr

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 Scores follow the rules of basketball. You can get either 3 points, 2 points foul line) depending
--- a/docs/environments/atari/earthworld.md
+++ b/docs/environments/atari/earthworld.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Earthworld-v5")` |

 For more Earthworld variants with different observation and action spaces, see the variants section.
@@ -27,7 +25,7 @@ Earthworld is missing description documentation. If you are interested in writin

 ## Actions

-Earthworld has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Earthworld has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Earthworld uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -41,13 +39,14 @@ As Earthworld uses the full set of actions then specifying `full_action_space=Tr

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/elevator_action.md
+++ b/docs/environments/atari/elevator_action.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/ElevatorAction-v5")` |

 For more ElevatorAction variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-ElevatorAction has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+ElevatorAction has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As ElevatorAction uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As ElevatorAction uses the full set of actions then specifying `full_action_spac

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You start with 4 lives and are awarded 100 points for each enemy shot, and 500 points for each
--- a/docs/environments/atari/enduro.md
+++ b/docs/environments/atari/enduro.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(9) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Enduro-v5")` |

 For more Enduro variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Enduro has the action space `Discrete(9)` with the table below lists the meaning of each action's meanings.
-As Enduro uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Enduro has the action space of `Discrete(9)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -42,13 +39,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You get 1 point for each vehicle you overtake.
--- a/docs/environments/atari/entombed.md
+++ b/docs/environments/atari/entombed.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Entombed-v5")` |

 For more Entombed variants with different observation and action spaces, see the variants section.
@@ -27,7 +25,7 @@ Entombed is missing description documentation. If you are interested in writing

 ## Actions

-Entombed has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Entombed has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Entombed uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -41,13 +39,14 @@ As Entombed uses the full set of actions then specifying `full_action_space=True

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/et.md
+++ b/docs/environments/atari/et.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Et-v5")` |

 For more Et variants with different observation and action spaces, see the variants section.
@@ -27,7 +25,7 @@ Et is missing description documentation. If you are interested in writing up a d

 ## Actions

-Et has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Et has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Et uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -41,13 +39,14 @@ As Et uses the full set of actions then specifying `full_action_space=True` will

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/fishing_derby.md
+++ b/docs/environments/atari/fishing_derby.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/FishingDerby-v5")` |

 For more FishingDerby variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-FishingDerby has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+FishingDerby has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As FishingDerby uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As FishingDerby uses the full set of actions then specifying `full_action_space=

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 The exact reward dynamics depend on the environment and are usually documented in the game's manual. You can
--- a/docs/environments/atari/flag_capture.md
+++ b/docs/environments/atari/flag_capture.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/FlagCapture-v5")` |

 For more FlagCapture variants with different observation and action spaces, see the variants section.
@@ -27,7 +25,7 @@ FlagCapture is missing description documentation. If you are interested in writi

 ## Actions

-FlagCapture has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+FlagCapture has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As FlagCapture uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -41,13 +39,14 @@ As FlagCapture uses the full set of actions then specifying `full_action_space=T

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/freeway.md
+++ b/docs/environments/atari/freeway.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(3) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Freeway-v5")` |

 For more Freeway variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Freeway has the action space `Discrete(3)` with the table below lists the meaning of each action's meanings.
-As Freeway uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Freeway has the action space of `Discrete(3)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -40,13 +37,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 The exact reward dynamics depend on the environment and are usually documented in the game's manual. You can
--- a/docs/environments/atari/frogger.md
+++ b/docs/environments/atari/frogger.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(5) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Frogger-v5")` |

 For more Frogger variants with different observation and action spaces, see the variants section.
@@ -27,8 +25,7 @@ Frogger is missing description documentation. If you are interested in writing u

 ## Actions

-Frogger has the action space `Discrete(5)` with the table below lists the meaning of each action's meanings.
-As Frogger uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Frogger has the action space of `Discrete(5)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -39,13 +36,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/frostbite.md
+++ b/docs/environments/atari/frostbite.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Frostbite-v5")` |

 For more Frostbite variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Frostbite has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Frostbite has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Frostbite uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As Frostbite uses the full set of actions then specifying `full_action_space=Tru

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 The exact reward dynamics depend on the environment and are usually documented in the game's manual. You can
--- a/docs/environments/atari/galaxian.md
+++ b/docs/environments/atari/galaxian.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(6) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Galaxian-v5")` |

 For more Galaxian variants with different observation and action spaces, see the variants section.
@@ -27,8 +25,7 @@ Galaxian is missing description documentation. If you are interested in writing

 ## Actions

-Galaxian has the action space `Discrete(6)` with the table below lists the meaning of each action's meanings.
-As Galaxian uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Galaxian has the action space of `Discrete(6)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -39,13 +36,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/gopher.md
+++ b/docs/environments/atari/gopher.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(8) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Gopher-v5")` |

 For more Gopher variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Gopher has the action space `Discrete(8)` with the table below lists the meaning of each action's meanings.
-As Gopher uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Gopher has the action space of `Discrete(8)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -42,13 +39,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 The exact reward dynamics depend on the environment and are usually documented in the game's manual. You can
--- a/docs/environments/atari/gravitar.md
+++ b/docs/environments/atari/gravitar.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Gravitar-v5")` |

 For more Gravitar variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Gravitar has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Gravitar has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Gravitar uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As Gravitar uses the full set of actions then specifying `full_action_space=True

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 The exact reward dynamics depend on the environment and are usually documented in the game's manual. You can
--- a/docs/environments/atari/hangman.md
+++ b/docs/environments/atari/hangman.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Hangman-v5")` |

 For more Hangman variants with different observation and action spaces, see the variants section.
@@ -27,7 +25,7 @@ Hangman is missing description documentation. If you are interested in writing u

 ## Actions

-Hangman has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Hangman has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Hangman uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -41,13 +39,14 @@ As Hangman uses the full set of actions then specifying `full_action_space=True`

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/haunted_house.md
+++ b/docs/environments/atari/haunted_house.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/HauntedHouse-v5")` |

 For more HauntedHouse variants with different observation and action spaces, see the variants section.
@@ -27,7 +25,7 @@ HauntedHouse is missing description documentation. If you are interested in writ

 ## Actions

-HauntedHouse has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+HauntedHouse has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As HauntedHouse uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -41,13 +39,14 @@ As HauntedHouse uses the full set of actions then specifying `full_action_space=

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/hero.md
+++ b/docs/environments/atari/hero.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Hero-v5")` |

 For more Hero variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Hero has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Hero has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Hero uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As Hero uses the full set of actions then specifying `full_action_space=True` wi

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You score points for shooting critters, rescuing miners, and dynamiting walls.
--- a/docs/environments/atari/human_cannonball.md
+++ b/docs/environments/atari/human_cannonball.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/HumanCannonball-v5")` |

 For more HumanCannonball variants with different observation and action spaces, see the variants section.
@@ -27,7 +25,7 @@ HumanCannonball is missing description documentation. If you are interested in w

 ## Actions

-HumanCannonball has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+HumanCannonball has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As HumanCannonball uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -41,13 +39,14 @@ As HumanCannonball uses the full set of actions then specifying `full_action_spa

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/ice_hockey.md
+++ b/docs/environments/atari/ice_hockey.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/IceHockey-v5")` |

 For more IceHockey variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-IceHockey has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+IceHockey has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As IceHockey uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As IceHockey uses the full set of actions then specifying `full_action_space=Tru

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You score points by shooting the puck into your opponent's goal. Your opponent scores in the same manner.
--- a/docs/environments/atari/jamesbond.md
+++ b/docs/environments/atari/jamesbond.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Jamesbond-v5")` |

 For more Jamesbond variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Jamesbond has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Jamesbond has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Jamesbond uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As Jamesbond uses the full set of actions then specifying `full_action_space=Tru

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 The game ends when you complete the last mission or when you lose the last craft. In either case, you'll receive your final score.
--- a/docs/environments/atari/journey_escape.md
+++ b/docs/environments/atari/journey_escape.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(16) |
-| Observation Shape | (230, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (230, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/JourneyEscape-v5")` |

 For more JourneyEscape variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-JourneyEscape has the action space `Discrete(16)` with the table below lists the meaning of each action's meanings.
-As JourneyEscape uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+JourneyEscape has the action space of `Discrete(16)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -45,13 +42,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 At the start of the game, you will have $50,000 and 60 units of time.
--- a/docs/environments/atari/kaboom.md
+++ b/docs/environments/atari/kaboom.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(4) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Kaboom-v5")` |

 For more Kaboom variants with different observation and action spaces, see the variants section.
@@ -27,8 +25,7 @@ Kaboom is missing description documentation. If you are interested in writing up

 ## Actions

-Kaboom has the action space `Discrete(4)` with the table below lists the meaning of each action's meanings.
-As Kaboom uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Kaboom has the action space of `Discrete(4)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -39,13 +36,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/kangaroo.md
+++ b/docs/environments/atari/kangaroo.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Kangaroo-v5")` |

 For more Kangaroo variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Kangaroo has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Kangaroo has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Kangaroo uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As Kangaroo uses the full set of actions then specifying `full_action_space=True

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 Your score will be shown at the top right corner of the game.
--- a/docs/environments/atari/keystone_kapers.md
+++ b/docs/environments/atari/keystone_kapers.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(14) |
-| Observation Shape | (250, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (250, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/KeystoneKapers-v5")` |

 For more KeystoneKapers variants with different observation and action spaces, see the variants section.
@@ -27,8 +25,7 @@ KeystoneKapers is missing description documentation. If you are interested in wr

 ## Actions

-KeystoneKapers has the action space `Discrete(14)` with the table below lists the meaning of each action's meanings.
-As KeystoneKapers uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+KeystoneKapers has the action space of `Discrete(14)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -42,13 +39,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/king_kong.md
+++ b/docs/environments/atari/king_kong.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(6) |
-| Observation Shape | (250, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (250, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/KingKong-v5")` |

 For more KingKong variants with different observation and action spaces, see the variants section.
@@ -27,8 +25,7 @@ KingKong is missing description documentation. If you are interested in writing

 ## Actions

-KingKong has the action space `Discrete(6)` with the table below lists the meaning of each action's meanings.
-As KingKong uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+KingKong has the action space of `Discrete(6)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -39,13 +36,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/klax.md
+++ b/docs/environments/atari/klax.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (250, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (250, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Klax-v5")` |

 For more Klax variants with different observation and action spaces, see the variants section.
@@ -27,7 +25,7 @@ Klax is missing description documentation. If you are interested in writing up a

 ## Actions

-Klax has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Klax has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Klax uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -41,13 +39,14 @@ As Klax uses the full set of actions then specifying `full_action_space=True` wi

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/koolaid.md
+++ b/docs/environments/atari/koolaid.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(9) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Koolaid-v5")` |

 For more Koolaid variants with different observation and action spaces, see the variants section.
@@ -27,8 +25,7 @@ Koolaid is missing description documentation. If you are interested in writing u

 ## Actions

-Koolaid has the action space `Discrete(9)` with the table below lists the meaning of each action's meanings.
-As Koolaid uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Koolaid has the action space of `Discrete(9)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -40,13 +37,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/krull.md
+++ b/docs/environments/atari/krull.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Krull-v5")` |

 For more Krull variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Krull has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Krull has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Krull uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As Krull uses the full set of actions then specifying `full_action_space=True` w

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You will receive various scores for each monster you kill.
--- a/docs/environments/atari/kung_fu_master.md
+++ b/docs/environments/atari/kung_fu_master.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(14) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/KungFuMaster-v5")` |

 For more KungFuMaster variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-KungFuMaster has the action space `Discrete(14)` with the table below lists the meaning of each action's meanings.
-As KungFuMaster uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+KungFuMaster has the action space of `Discrete(14)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -44,13 +41,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/laser_gates.md
+++ b/docs/environments/atari/laser_gates.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (250, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (250, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/LaserGates-v5")` |

 For more LaserGates variants with different observation and action spaces, see the variants section.
@@ -27,7 +25,7 @@ LaserGates is missing description documentation. If you are interested in writin

 ## Actions

-LaserGates has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+LaserGates has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As LaserGates uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -41,13 +39,14 @@ As LaserGates uses the full set of actions then specifying `full_action_space=Tr

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/lost_luggage.md
+++ b/docs/environments/atari/lost_luggage.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(9) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/LostLuggage-v5")` |

 For more LostLuggage variants with different observation and action spaces, see the variants section.
@@ -27,8 +25,7 @@ LostLuggage is missing description documentation. If you are interested in writi

 ## Actions

-LostLuggage has the action space `Discrete(9)` with the table below lists the meaning of each action's meanings.
-As LostLuggage uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+LostLuggage has the action space of `Discrete(9)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -40,13 +37,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/mario_bros.md
+++ b/docs/environments/atari/mario_bros.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/MarioBros-v5")` |

 For more MarioBros variants with different observation and action spaces, see the variants section.
@@ -27,7 +25,7 @@ MarioBros is missing description documentation. If you are interested in writing

 ## Actions

-MarioBros has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+MarioBros has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As MarioBros uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -41,13 +39,14 @@ As MarioBros uses the full set of actions then specifying `full_action_space=Tru

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/miniature_golf.md
+++ b/docs/environments/atari/miniature_golf.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/MiniatureGolf-v5")` |

 For more MiniatureGolf variants with different observation and action spaces, see the variants section.
@@ -27,7 +25,7 @@ MiniatureGolf is missing description documentation. If you are interested in wri

 ## Actions

-MiniatureGolf has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+MiniatureGolf has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As MiniatureGolf uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -41,13 +39,14 @@ As MiniatureGolf uses the full set of actions then specifying `full_action_space

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/montezuma_revenge.md
+++ b/docs/environments/atari/montezuma_revenge.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/MontezumaRevenge-v5")` |

 For more MontezumaRevenge variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-MontezumaRevenge has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+MontezumaRevenge has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As MontezumaRevenge uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As MontezumaRevenge uses the full set of actions then specifying `full_action_sp

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/mr_do.md
+++ b/docs/environments/atari/mr_do.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(10) |
-| Observation Shape | (250, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (250, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/MrDo-v5")` |

 For more MrDo variants with different observation and action spaces, see the variants section.
@@ -27,8 +25,7 @@ MrDo is missing description documentation. If you are interested in writing up a

 ## Actions

-MrDo has the action space `Discrete(10)` with the table below lists the meaning of each action's meanings.
-As MrDo uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+MrDo has the action space of `Discrete(10)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -41,13 +38,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/ms_pacman.md
+++ b/docs/environments/atari/ms_pacman.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(9) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/MsPacman-v5")` |

 For more MsPacman variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-MsPacman has the action space `Discrete(9)` with the table below lists the meaning of each action's meanings.
-As MsPacman uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+MsPacman has the action space of `Discrete(9)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -42,13 +39,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/name_this_game.md
+++ b/docs/environments/atari/name_this_game.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(6) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/NameThisGame-v5")` |

 For more NameThisGame variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-NameThisGame has the action space `Discrete(6)` with the table below lists the meaning of each action's meanings.
-As NameThisGame uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+NameThisGame has the action space of `Discrete(6)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -41,13 +38,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/othello.md
+++ b/docs/environments/atari/othello.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(10) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Othello-v5")` |

 For more Othello variants with different observation and action spaces, see the variants section.
@@ -27,8 +25,7 @@ Othello is missing description documentation. If you are interested in writing u

 ## Actions

-Othello has the action space `Discrete(10)` with the table below lists the meaning of each action's meanings.
-As Othello uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Othello has the action space of `Discrete(10)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -41,13 +38,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/pacman.md
+++ b/docs/environments/atari/pacman.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(5) |
-| Observation Shape | (250, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (250, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Pacman-v5")` |

 For more Pacman variants with different observation and action spaces, see the variants section.
@@ -27,8 +25,7 @@ Pacman is missing description documentation. If you are interested in writing up

 ## Actions

-Pacman has the action space `Discrete(5)` with the table below lists the meaning of each action's meanings.
-As Pacman uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Pacman has the action space of `Discrete(5)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -39,13 +36,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/phoenix.md
+++ b/docs/environments/atari/phoenix.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(8) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Phoenix-v5")` |

 For more Phoenix variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Phoenix has the action space `Discrete(8)` with the table below lists the meaning of each action's meanings.
-As Phoenix uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Phoenix has the action space of `Discrete(8)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -42,13 +39,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/pitfall.md
+++ b/docs/environments/atari/pitfall.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Pitfall-v5")` |

 For more Pitfall variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Pitfall has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Pitfall has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Pitfall uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As Pitfall uses the full set of actions then specifying `full_action_space=True`

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You get score points for collecting treasure, you lose points through some misfortunes like falling down a hole.
--- a/docs/environments/atari/pitfall2.md
+++ b/docs/environments/atari/pitfall2.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Pitfall2-v5")` |

 For more Pitfall2 variants with different observation and action spaces, see the variants section.
@@ -27,7 +25,7 @@ Pitfall2 is missing description documentation. If you are interested in writing

 ## Actions

-Pitfall2 has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Pitfall2 has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Pitfall2 uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -41,13 +39,14 @@ As Pitfall2 uses the full set of actions then specifying `full_action_space=True

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/pong.md
+++ b/docs/environments/atari/pong.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(6) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Pong-v5")` |

 For more Pong variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Pong has the action space `Discrete(6)` with the table below lists the meaning of each action's meanings.
-As Pong uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Pong has the action space of `Discrete(6)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -41,13 +38,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You get score points for getting the ball to pass the opponent's paddle. You lose points if the ball passes your paddle.
--- a/docs/environments/atari/pooyan.md
+++ b/docs/environments/atari/pooyan.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(6) |
-| Observation Shape | (220, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (220, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Pooyan-v5")` |

 For more Pooyan variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Pooyan has the action space `Discrete(6)` with the table below lists the meaning of each action's meanings.
-As Pooyan uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Pooyan has the action space of `Discrete(6)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -41,13 +38,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 If you hit a balloon, wolf or stone with an arrow you score points.
--- a/docs/environments/atari/private_eye.md
+++ b/docs/environments/atari/private_eye.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/PrivateEye-v5")` |

 For more PrivateEye variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-PrivateEye has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+PrivateEye has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As PrivateEye uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As PrivateEye uses the full set of actions then specifying `full_action_space=Tr

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You score points for completing your tasks like gathering evidence, nabbing questionable characters or closing cases etc. You lose points if you get hit or if your auto is on a pothole.
--- a/docs/environments/atari/qbert.md
+++ b/docs/environments/atari/qbert.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(6) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Qbert-v5")` |

 For more Qbert variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Qbert has the action space `Discrete(6)` with the table below lists the meaning of each action's meanings.
-As Qbert uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Qbert has the action space of `Discrete(6)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -41,13 +38,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You score points for changing color of the cubes to their destination colors or by defeating enemies. You also gain points for completing a level.
--- a/docs/environments/atari/riverraid.md
+++ b/docs/environments/atari/riverraid.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Riverraid-v5")` |

 For more Riverraid variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Riverraid has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Riverraid has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Riverraid uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As Riverraid uses the full set of actions then specifying `full_action_space=Tru

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 Score points are your only reward. You get score points each time you destroy an enemy object:
--- a/docs/environments/atari/road_runner.md
+++ b/docs/environments/atari/road_runner.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/RoadRunner-v5")` |

 For more RoadRunner variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-RoadRunner has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+RoadRunner has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As RoadRunner uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As RoadRunner uses the full set of actions then specifying `full_action_space=Tr

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 Score points are your only reward. You get score points each time you:
--- a/docs/environments/atari/robotank.md
+++ b/docs/environments/atari/robotank.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Robotank-v5")` |

 For more Robotank variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Robotank has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Robotank has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Robotank uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As Robotank uses the full set of actions then specifying `full_action_space=True

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 The number of enemies destroyed is the only reward.
--- a/docs/environments/atari/seaquest.md
+++ b/docs/environments/atari/seaquest.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Seaquest-v5")` |

 For more Seaquest variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Seaquest has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Seaquest has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Seaquest uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As Seaquest uses the full set of actions then specifying `full_action_space=True

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 Score points are your only reward.
--- a/docs/environments/atari/sir_lancelot.md
+++ b/docs/environments/atari/sir_lancelot.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(6) |
-| Observation Shape | (250, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (250, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/SirLancelot-v5")` |

 For more SirLancelot variants with different observation and action spaces, see the variants section.
@@ -27,8 +25,7 @@ SirLancelot is missing description documentation. If you are interested in writi

 ## Actions

-SirLancelot has the action space `Discrete(6)` with the table below lists the meaning of each action's meanings.
-As SirLancelot uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+SirLancelot has the action space of `Discrete(6)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -39,13 +36,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/skiing.md
+++ b/docs/environments/atari/skiing.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(3) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Skiing-v5")` |

 For more Skiing variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Skiing has the action space `Discrete(3)` with the table below lists the meaning of each action's meanings.
-As Skiing uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Skiing has the action space of `Discrete(3)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -40,13 +37,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 Seconds are your only rewards - negative rewards and penalties (e.g. missing a gate) are assigned as additional seconds.
--- a/docs/environments/atari/solaris.md
+++ b/docs/environments/atari/solaris.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Solaris-v5")` |

 For more Solaris variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Solaris has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Solaris has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Solaris uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As Solaris uses the full set of actions then specifying `full_action_space=True`

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You gain points for destroying enemies, rescuing cadets, making it through a corridor, destroying enemy planets etc. For a more detailed documentation, see [the AtariAge page](https://atariage.com/manual_html_page.php?SoftwareLabelID=450).
--- a/docs/environments/atari/space_invaders.md
+++ b/docs/environments/atari/space_invaders.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(6) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/SpaceInvaders-v5")` |

 For more SpaceInvaders variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-SpaceInvaders has the action space `Discrete(6)` with the table below lists the meaning of each action's meanings.
-As SpaceInvaders uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+SpaceInvaders has the action space of `Discrete(6)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -41,13 +38,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You gain points for destroying space invaders. The invaders in the back rows are worth more points. For a more detailed documentation, see [the AtariAge page](https://atariage.com/manual_html_page.php?SoftwareLabelID=460).
--- a/docs/environments/atari/space_war.md
+++ b/docs/environments/atari/space_war.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (250, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (250, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/SpaceWar-v5")` |

 For more SpaceWar variants with different observation and action spaces, see the variants section.
@@ -27,7 +25,7 @@ SpaceWar is missing description documentation. If you are interested in writing

 ## Actions

-SpaceWar has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+SpaceWar has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As SpaceWar uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -41,13 +39,14 @@ As SpaceWar uses the full set of actions then specifying `full_action_space=True

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/star_gunner.md
+++ b/docs/environments/atari/star_gunner.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/StarGunner-v5")` |

 For more StarGunner variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](http://www.atarimania

 ## Actions

-StarGunner has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+StarGunner has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As StarGunner uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As StarGunner uses the full set of actions then specifying `full_action_space=Tr

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You score points for destroying enemies. You get bonus points for clearing a wave and a level. For a more detailed documentation, see [the Atari Mania page](http://www.atarimania.com/game-atari-2600-vcs-stargunner_16921.html).
--- a/docs/environments/atari/superman.md
+++ b/docs/environments/atari/superman.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Superman-v5")` |

 For more Superman variants with different observation and action spaces, see the variants section.
@@ -27,7 +25,7 @@ Superman is missing description documentation. If you are interested in writing

 ## Actions

-Superman has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Superman has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Superman uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -41,13 +39,14 @@ As Superman uses the full set of actions then specifying `full_action_space=True

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/surround.md
+++ b/docs/environments/atari/surround.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(5) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Surround-v5")` |

 For more Surround variants with different observation and action spaces, see the variants section.
@@ -27,8 +25,7 @@ Surround is missing description documentation. If you are interested in writing

 ## Actions

-Surround has the action space `Discrete(5)` with the table below lists the meaning of each action's meanings.
-As Surround uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Surround has the action space of `Discrete(5)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -39,13 +36,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/tennis.md
+++ b/docs/environments/atari/tennis.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Tennis-v5")` |

 For more Tennis variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Tennis has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Tennis has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Tennis uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As Tennis uses the full set of actions then specifying `full_action_space=True`

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 The scoring is as per the sport of tennis, played till one set. For a more detailed documentation, see [the AtariAge page](https://atariage.com/manual_html_page.php?SoftwareLabelID=555).
--- a/docs/environments/atari/tetris.md
+++ b/docs/environments/atari/tetris.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(5) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Tetris-v5")` |

 For more Tetris variants with different observation and action spaces, see the variants section.
@@ -27,8 +25,7 @@ Tetris is missing description documentation. If you are interested in writing up

 ## Actions

-Tetris has the action space `Discrete(5)` with the table below lists the meaning of each action's meanings.
-As Tetris uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Tetris has the action space of `Discrete(5)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -39,13 +36,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/tic_tac_toe_3d.md
+++ b/docs/environments/atari/tic_tac_toe_3d.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(10) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/TicTacToe3D-v5")` |

 For more TicTacToe3D variants with different observation and action spaces, see the variants section.
@@ -27,8 +25,7 @@ TicTacToe3D is missing description documentation. If you are interested in writi

 ## Actions

-TicTacToe3D has the action space `Discrete(10)` with the table below lists the meaning of each action's meanings.
-As TicTacToe3D uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+TicTacToe3D has the action space of `Discrete(10)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -41,13 +38,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/time_pilot.md
+++ b/docs/environments/atari/time_pilot.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(10) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/TimePilot-v5")` |

 For more TimePilot variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](http://www.atarimania

 ## Actions

-TimePilot has the action space `Discrete(10)` with the table below lists the meaning of each action's meanings.
-As TimePilot uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+TimePilot has the action space of `Discrete(10)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -43,13 +40,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`
 ### Rewards

 You score points for destroying enemies, gaining more points for difficult enemies. For a more detailed documentation, see [the Atari Mania page](http://www.atarimania.com/game-atari-2600-vcs-time-pilot_8038.html).
--- a/docs/environments/atari/trondead.md
+++ b/docs/environments/atari/trondead.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Trondead-v5")` |

 For more Trondead variants with different observation and action spaces, see the variants section.
@@ -27,7 +25,7 @@ Trondead is missing description documentation. If you are interested in writing

 ## Actions

-Trondead has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Trondead has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Trondead uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -41,13 +39,14 @@ As Trondead uses the full set of actions then specifying `full_action_space=True

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/turmoil.md
+++ b/docs/environments/atari/turmoil.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(12) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Turmoil-v5")` |

 For more Turmoil variants with different observation and action spaces, see the variants section.
@@ -27,8 +25,7 @@ Turmoil is missing description documentation. If you are interested in writing u

 ## Actions

-Turmoil has the action space `Discrete(12)` with the table below lists the meaning of each action's meanings.
-As Turmoil uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Turmoil has the action space of `Discrete(12)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -41,13 +38,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/tutankham.md
+++ b/docs/environments/atari/tutankham.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(8) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Tutankham-v5")` |

 For more Tutankham variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Tutankham has the action space `Discrete(8)` with the table below lists the meaning of each action's meanings.
-As Tutankham uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+Tutankham has the action space of `Discrete(8)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -42,13 +39,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/up_n_down.md
+++ b/docs/environments/atari/up_n_down.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(6) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/UpNDown-v5")` |

 For more UpNDown variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-UpNDown has the action space `Discrete(6)` with the table below lists the meaning of each action's meanings.
-As UpNDown uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+UpNDown has the action space of `Discrete(6)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -41,13 +38,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/venture.md
+++ b/docs/environments/atari/venture.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/Venture-v5")` |

 For more Venture variants with different observation and action spaces, see the variants section.
@@ -29,7 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-Venture has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+Venture has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As Venture uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -43,13 +41,14 @@ As Venture uses the full set of actions then specifying `full_action_space=True`

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/video_checkers.md
+++ b/docs/environments/atari/video_checkers.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(5) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/VideoCheckers-v5")` |

 For more VideoCheckers variants with different observation and action spaces, see the variants section.
@@ -27,8 +25,7 @@ VideoCheckers is missing description documentation. If you are interested in wri

 ## Actions

-VideoCheckers has the action space `Discrete(5)` with the table below lists the meaning of each action's meanings.
-As VideoCheckers uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+VideoCheckers has the action space of `Discrete(5)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -39,13 +36,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/video_chess.md
+++ b/docs/environments/atari/video_chess.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(10) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/VideoChess-v5")` |

 For more VideoChess variants with different observation and action spaces, see the variants section.
@@ -27,8 +25,7 @@ VideoChess is missing description documentation. If you are interested in writin

 ## Actions

-VideoChess has the action space `Discrete(10)` with the table below lists the meaning of each action's meanings.
-As VideoChess uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+VideoChess has the action space of `Discrete(10)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -41,13 +38,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/video_cube.md
+++ b/docs/environments/atari/video_cube.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(18) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/VideoCube-v5")` |

 For more VideoCube variants with different observation and action spaces, see the variants section.
@@ -27,7 +25,7 @@ VideoCube is missing description documentation. If you are interested in writing

 ## Actions

-VideoCube has the action space `Discrete(18)` with the table below lists the meaning of each action's meanings.
+VideoCube has the action space `Discrete(18)` with the table below listing the meaning of each action's meanings.
 As VideoCube uses the full set of actions then specifying `full_action_space=True` will not modify the action space of the environment if passed to `gymnasium.make`.

 | Value   | Meaning      | Value   | Meaning         | Value   | Meaning        |
@@ -41,13 +39,14 @@ As VideoCube uses the full set of actions then specifying `full_action_space=Tru

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/docs/environments/atari/video_pinball.md
+++ b/docs/environments/atari/video_pinball.md
@@ -14,9 +14,7 @@ This environment is part of the <a href='..'>Atari environments</a>. Please read
 |   |   |
 |---|---|
 | Action Space | Discrete(9) |
-| Observation Shape | (210, 160, 3) |
-| Observation High | 255 |
-| Observation Low | 0  |
+| Observation Space | Box(0, 255, (210, 160, 3), uint8) |
 | Import | `gymnasium.make("ALE/VideoPinball-v5")` |

 For more VideoPinball variants with different observation and action spaces, see the variants section.
@@ -29,8 +27,7 @@ For a more detailed documentation, see [the AtariAge page](https://atariage.com/

 ## Actions

-VideoPinball has the action space `Discrete(9)` with the table below lists the meaning of each action's meanings.
-As VideoPinball uses a reduced set of actions for `v0`, `v4` and `v5` versions of the environment.
+VideoPinball has the action space of `Discrete(9)` with the table below listing the meaning of each action's meanings.
 To enable all 18 possible actions that can be performed on an Atari 2600, specify `full_action_space=True` during
 initialization or by passing `full_action_space=True` to `gymnasium.make`.

@@ -42,13 +39,14 @@ initialization or by passing `full_action_space=True` to `gymnasium.make`.

 ## Observations

-Atari environment have two possible observation types, the observation space is listed below.
-See variants section for the type of observation used by each environment id.
+Atari environments have three possible observation types: `"rgb"`, `"grayscale"` and `"ram"`.

 - `obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)`
 - `obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)`
+- `obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8)`, a grayscale version of the "rgb" type
+
+See variants section for the type of observation used by each environment id by default.

-Additionally, `obs_type="grayscale"` cause the environment return a grayscale version of the rgb array for observations with the observation space being `Box(0, 255, (210, 160), np.uint8)`

 ## Variants

--- a/Show More
+++ b/Show More