Passwords
Level 3 - Wolverine Head, Claws, X, Wolverine Body
Level 4 - Claws, Sabertooth, Wolverine Body, Wolverine Head
Unlock a New Costume
To unlock Wolvie's classic brown and yellow suit, enter this code at the title screen: UP, UP, DOWN, DOWN, LEFT, RIGHT, LEFT, RIGHT, B, A. The suit also helps you heal faster.