Prince of Persia: The Sands of Time Cheats

First, hang on to a ledge and fall off, but don't move after you fall. If there is a wall next to you, you will slide through it if you press and hold DOWN.

If you've got this game for the Gamecube, you will find white boxes spilling light on the GCube version. Connect to the GCube using a GCN-GBA Adaptor plug. When you break the boxes, you will unlock a level each time.