Unused Object Layouts

This is a sub-page of Sonic Generations (PlayStation 3, Xbox 360, Windows)/Challenge Act Content.

There are several objects and layouts that can be found in and out of the game's boundaries. Many of which consist of older layouts from when the stage was still in development. Some content that is found in the same stage/act more than once will be listed as "General" Anything that is found in the main stages, also present here, will not be included.