Enter the codes at the main menu. Cheat mode must be activated for the other codes to work.
Cheat mode:
Left, Down, L, L, Up, Right, Left, Up.
All items:
R, C-Right, Down, L, C-Up, Left, C-Right, Left.
Invincibility:
R, C-Right, R, L, R, R, R, Left.
No monsters:
L, C-Up, Left, L, C-Down, R, L, R.
Level select:
R, L, R, C-Down, Right, Up, Left, C-Up.
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