I recently attached a Game Center account to my game, but it was the wrong account. Does anybody know how to detach a Game Center account from a game, without having to start over in the game? As long as I am playing offline, or signed in with my original GC account, everything is fine and I'm on level 40. But as soon as I try signing in with a new Game Center account, the game starts over to level 1. I've tried turning off Game Center, starting the game, and then creating a new Game Center account, but that doesn't work either.