This is a sub-page of Sonic Generations (PlayStation 3, Xbox 360, Windows).
Early Stage Layouts#
A couple thumbnails used for the Challenge Acts have some minor changes that is not present in the final game.
Knuckles: Horde of Enemies#
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Final |
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- There is a set of platforms that can be briefly seen below the Giant Motobug. In final, this was mainly removed.
- Along with that, Knuckles is seen gliding over the enemy. Knuckles hits the Motobug in the final and falls into the pit below to continue on.
Dash Rings 1-2-3 (Rooftop Run)#
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Early |
Final |
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- The only difference that can be found here is a laser object being removed, which was replaced by two cubes in the final.
Unused Rank Times#
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To do: |
Barrel Ring Bonus#
The Challenge Act for Rooftop Run (Act 2) has a 90 second timer, with an A Rank being the lowest the player can get. However, there are times for both a B and C Rank that cannot be seen without pausing the timer in the Challenge Act.


Oddities#
Buzz Bomber's Revenge#
Upon spawning into the stage, there is a rock behind the player that cannot be destroyed due to there being an invisible barrier... Well, to actually. The second one cannot be seen in-game, not even well enough for the game's camera, and can only be seen in a level editor.
Look Out Below!#
The bottom path has a pulley stand just before the player slides under. This object is not present in any of the other stages, except for the Doppelganger race.
300% Boost Challenge#
The pulley that the player grabs onto at the bridge as rocks extending further than the area of spikes.
City Escape Challenges#
In some of the Challenge Acts for City Escape (Act 2), all objects are loaded into the game despite the player not able to reach some areas. Some areas for where the cars spawn are horizontal instead of vertical, where one of the orange cars spawned is placed in an odd way.
Goal Post Juggle#
This challenge act for Crisis City (Act 1) has a explosion trap placed under the platforms. It's unknown if it was meant to be interacted with or just a simple decoration.