• Golden Age Suit Complete the last level.
• Pod Suit Beat Bizzaro for the last time.

Unverified codes for Supe R. Man ... 1 Fortress of Solitude, North Pole. Go to the Fortress of Solitude screen while playing (PAUSE) and input away.

God mode (Superman) -- UP, UP, DOWN, DOWN, LEFT, RIGHT, LEFT, RIGHT, CIRCLE, CIRCLE.

All powers -- LEFT, CIRCLE, RIGHT, CIRCLE, DOWN, CIRCLE, UP, DOWN, CIRCLE, CIRCLE.

All Extras -- LEFT, UP, RIGHT, DOWN, CIRCLE, CIRCLE, CIRCLE, UP, RIGHT, CIRCLE.

Metropolis Indestructable -- CIRCLE, RIGHT, CIRCLE, RIGHT, UP, LEFT, RIGHT, CIRCLE.

Unlock Bizarro -- UP, RIGHT, DOWN, RIGHT, UP, LEFT, DOWN, RIGHT, UP.