Unlimited lives
Pause game play, then hold [L1] and press [Up]x3,
[Left]x2, [Right], [Left], [Right].
Unlimited shield
Pause the game, then hold [L1] and press [Up],
[Down], [Up], [Left], [Right], [Down],
[Up].
Cheats
Collect all 400 fireflies in a level to unlock the
corresponding cheat.
Level 1: Insect Eye . Changes your vision.
Level 2: Screen Switch. Reverses level.
Level 3. Auto-Hop. Hold D-Pad to keep Zapper moving.
Level 4: Infinite Super Zap. Zapper always has a Super Zap.