Merged sections and repeated information (#21590)

Merged repeated informations in the "Noteworthy Games" section.

guide/english/game-development/unity/index.md

@@ -44,6 +44,8 @@ In picture above, you will notice five section:
 * Hearthstone: Heroes of Warcraft
 * Inside
 * Cuphead
+* Rust
+* Kerbal Space Program
 * Club Penguin Island
      
 ## History
@@ -54,8 +56,6 @@ Unity formerly supported 7 other platforms including its own Unity Web Player.
 
 Unity Web Player was a browser plugin that was supported in Windows and OS X only, which has been deprecated in favor of WebGL.
 
-Unity is the engine used by Rust, Kerbal Space Program, and Cup Head.
-
 #### More Information: 
 
 [Unity's Official Website](https://unity3d.com/)