The Hulk Codes -

Invulnerability:
In the OPTIONS prompt, pick the CODE INPUT choice and submit the code GMMSKIN to unlock this option in the cheats menu. The Hulk and Bruce Banner will be invincible.

Regenerator:
In the OPTIONS prompt, pick the CODE INPUT choice and submit the code FLSHWND to unlock this option in the cheats menu. The Hulk will regenerate faster.

Full Rage Meter:
In the OPTIONS prompt, pick the CODE INPUT choice and submit the code ANGMNGT to unlock this option in the cheats menu. The Rage meter always remains full..

Unlimited Continues:
In the OPTIONS prompt, pick the CODE INPUT choice and submit the code GRNCHTR to unlock this option in the cheats menu.

Double Hulk's HP:
In the OPTIONS prompt, pick the CODE INPUT choice and submit the code HLTHDSE to unlock this option in the cheats menu.

Double All Enemies HP:
In the OPTIONS prompt, pick the CODE INPUT choice and submit the code BRNGITN to unlock this option in the cheats menu.

Half All Enemies HP:
In the OPTIONS prompt, pick the CODE INPUT choice and submit the code MMMYHLP to unlock this option in the cheats menu.

Wicked Punch:
In the OPTIONS prompt, pick the CODE INPUT choice and submit the code FSTOFRY to unlock this option in the cheats menu. The Hulk will have one hit kills.

Puzzle Solved:
In the OPTIONS prompt, pick the CODE INPUT choice and submit the code BRCESTN to unlock this option in the cheats menu. Puzzles will immediately be solved.

Reset High Score:
In the OPTIONS prompt, pick the CODE INPUT choice and submit the code NMBTHIH to unlock this option in the cheats menu.

Unlock All Levels:
In the OPTIONS prompt, pick the CODE INPUT choice and submit the code TRUBLVR to unlock this option in the cheats menu.

Hulk Transformed movie art:
Upon finding a terminal when playing the game, submit the code SANFRAN.

Hulk vs. Hulk Dogs movie art:
Upon finding a terminal when playing the game, submit the code PITBULL.

Desert Battle movie art:
Upon finding a terminal when playing the game, submit the code FIFTEEN.

Hulk Movie F/X movie art:
Upon finding a terminal when playing the game, submit the code NANOMED.

Unlock Gray Hulk:
Upon finding a terminal when playing the game, submit the code JANITOR.