Various Cheats
     At the Credits screen, enter any of the following "Codes":

Cheat code:             Effect:
meettheguys             Bonus Game
sendmefaster            Faster Game
wizardrules             Fight as Death
greatwhiteguy           Fight as Pain
neednobatteries         Game Boy Mode
toonsound               High-Pitched Announcer and Cartoon Sound Effects
yeoldegame              Pong Mini Game
bloobabblooba           Underwater Mode
eternalcoins            Unlimited Lives (1P Mode)