PLEASE NOTE: We take no responsibility for any changes you make to your hardware, software, drivers or O/S as a result of the cheats listed here. Only a few of the cheats listed have been tested and we cannot guarantee any of them will work. If you come across a bad/non-working cheat, please let us know and we will remove it.
At the title screen press Up, Up, Down, Down, L1, R1, L2, R2, L3, R3 on the second controller (has to be a Dual Shock 2). A sound will be made to confirm the code entry.
You will now start with 30 lives on Normal Difficulty.
Beat the game with an "A" rank on normal difficulty to unlock the "Gallery" option.
Beat the game on normal difficulty setting. Your rank will determine how much of the theater is unlocked:
Satellite Weapon: Complete level 5 with a "B" or "C" rank.
Return: Complete level 7 up to the credits with an "A" rank.
Triumphant Return: Complete level 7 including after the credits with an "A" rank.
Contra vs. Puppy: Complete the game with an "S" rank.