Cheat Menu
Pause the game and press L, A, Z, Y, Left, Right, A, Down, Right, L.
REMEMBER: This code will not work if you've changed the controller settings.

Flying Mode
Pause the game and press L, A, Right, L, Left, Down, Down. Unpause the game, then hold Y to fly around the level.
REMEMBER: This code will not work if you've changed the controller settings.

Invincibility
Pause the game and press R, Right, A, L, Right, A, Down, Y.
REMEMBER: This code will not work if you've changed the controller settings.