To use these codes, press CAPS LOCK to pause the game. Then type any of the following codes. Unfortunatly, this means that any chances of a high score are gone.
HECTOR - 8 lives
SQUISH - Machine Gun
NALA - Invincible
MORRISON - Complete the level
NICE BOX - Curve Gun
DJARUM - Pass through mushrooms
USMC - Adds 5,000 to bonus
NUKE EM - Destroys all nearby mushrooms
SCUMDOG - Cheating scores are saved on high score list
SNAPPLE - Padlock