Here’s a list of tips for the XBox Live platformer Fez…
Fly (New Game+)
Finish the game and start a New Game + adventure. In that mode, you can enter the following button combination any time you like to start flying: UP, UP, UP, UP+A.
Stereoscopic Mode
First, make sure that you collect all 64 cubes. Once you have done that, head to the Star Gate in the 32-cube room for a new ending. Once the credits roll, select New Game+ again from the main menu. Play until you reach the point where previously you received the fez and the sunglasses. This time, you’ll receive a pair of stereoscopic 3D glasses, which automatically enable Stereoscopic Mode. You can disable the effect in the Settings menu, if you wish.
IGN