All cheats are to be entered while on the pause menu. A sound effect will confirm proper entry.

Effect	Code
9 Lives	C, Right, A, B, B, A, Left, Left, A, Down.
Shutdown Delay	Left, Right, Up, Down, A, C.
Slow Motion Mode	Down, A, C, Up, Left, Left.
The Secret Mode	C, A, B, A, Left, Left.