Sonic Generations Cheats :
glItch-water palace act 2 jump behind map
by Unregistered Aug 16, 2012
to jump off the map first, get to the rail with the five orange enemies and boost through them. don't use all your boost though. then get to the 3/4 loop right after the rails. when you're on the loop don't use your boost. when you get to the sideways track on the loop if you press B at the right moment you'll jump straight through the platform the loop is standing on. after you go straight through the platform make sure to use your boost. you'll jump onto the water behind the map! just keep boosting and you'll stay on the water behind the map. sorry about the italic text. it got stuck like that. anyway, enjoy!