From Sonic Retro
|Level, Sonic X-treme|
|Number of Acts: 3|
There were intended to be at least three acts, whose names would have been "Prism Chorus," "Cryogenesis" and "Icegates." Early concept art also shows it was meant to be part of the ruins of an ancient society.
|Main Article | Enemies | Bosses | Storylines | Concept Art | Magazine Articles | Game Secrets|
|Jade Gully | Crystal Frost | Red Sands | Galaxy Fortress/Death Egg | Others|