- Super Nintendo
Cheat mode
Fire and reload the lightgun or controller at a blank portion of the main menu to spell out the code words. The number of times Fire is pressed corresponds to a letter in the alphabet, with 1 being the equivalent of "A" through 26 being the equivalent of "Z". Press Reload to move on to the next letter.
Master code
Enter "MEBIGCHEAT" as a code. Press Fire13, Reload, Fire5, Reload, Fire2, Reload, Fire9, Reload, Fire7, Reload, Fire3, Reload, Fire8, Reload, Fire5, Reload, Fire, Reload, Fire20, Reload at the main menu. If you entered the code correctly, the screen will flash.
Arcade mode
Enter "BLAM" as a code. Press Fire2, Reload, Fire12, Reload, Fire, Reload, Fire13, Reload at the main menu. If you entered the code correctly, the screen will flash. The "Arcade Mode" option will now be unlocked in the extras menu. If you entered the code correctly, the screen will flash. Alternately, successfully complete the game.
Country challenges
Enter "ABROAD" as a code. Press Fire, Reload, Fire2, Reload, Fire18, Reload, Fire15, Reload, Fire, Reload, Fire4, Reload at the main menu. If you entered the code correctly, the screen will flash.
Mighty Joe Jupiter mini-games
Enter "MIGHTIER" as a code. Press Fire13, Reload, Fire9, Reload, Fire7, Reload, Fire8, Reload, Fire20, Reload, Fire9, Reload, Fire5, Reload, Fire18, Reload at the main menu. If you entered the code correctly, the screen will flash. Alternately, successfully complete all Mighty levels in cadet training mode to unlock the "Mighty Joe Jupiter Trilogy" option in Mighty Joe Jupiter mode. Complete the easy levels in cadet training mode to unlock Mighty Joe Jupiter Episode 2. Complete the normal levels in cadet training mode to unlock Mighty Joe Jupiter Episode 3.
Jukebox and music test
Enter "LETSBOOGIE" as a code. Press Fire12, Reload, Fire5, Reload, Fire20, Reload, Fire19, Reload, Fire15, Reload, Fire15, Reload, Fire7, Reload, Fire9, Reload at the main menu. If you entered the code correctly, the screen will flash. Alternately, successfully complete all episodes in the Mighty Joe Jupiter Trilogy to unlock the "Music Jukebox" option at the Options screen.
New Weapons
Finish the game using arcade mode with the weapon indicated to get the new weapon when starting a new arcade game
pistol --> machine gun
machine gun --> Cane gun
cane gun --> Shotgun
Get Arcade & Mirror Modes
Finish the game 1 time to get arcade mode and Mirror mode
Get Hyper Arcade Mode
Finish the game 1 time in arcade mode using shotgun to get Hyper Arcade mode
Get Mighty Joe Jupiter Trilogy
Use cadet training mode and finish all Mighty levels. Complete those to get normal mode levels Joe Jupiter Episode 2 and finish those to get Joe Jupiter Episode 3
Get Music Jukebox
Finish all levels in the Mighty Joe Trilogy
Game Shark Codes
| Master Code Must Be On | 0E3C7DF2 1853E59E EE983936 BCCEDD42 |
| Unlock Arcade Mode | CE949BF2 BCA99B84 |
| Unlock Hyper Arc Mode in Arcade Mode | DE949A3E BCA99B84 |
| Unlock Arc Mode Machinegun in Arcade Mode | DE949AFA BCA99B84 |
| Unlock Arc Mode Cane Gun in Arcade Mode | DE949A86 BCA99B84 |
| Unlock Arc Mode Shotgun in Arcade Mode | DE949A82 BCA99B84 |
| Unlock Mirror Mode in Arcade Mode | DE949A8E BCA99B84 |
| Unlock Jukebox | DE949A9E BCA99B84 |
| Infinite Health on Cadet Training | 0EC9387E BCA99B83 CEC9387E BCA99B86 |
| Unlock Alien Skeet Training Level | CE949772 BCA99B86 |
| Infinite Ammo on Alien Skeet Training Level | C192871E BCA99B89 |
| Unlock Duck 'N' Cover Training Level | CE94977E BCA99B86 |
| Infinite Ammo on Duck 'N' Cover Training Level | CE80828E BCA99B89 |
| Unlock Chicken Run Training Level | CE94977A BCA99B86 |
| Infinite Ammo on Chicken Run Training Level | CE82783E BCA99B89 |
| Unlock Pot Shot Training Level | CE949706 BCA99B86 |
| Infinite Ammo on Pot Shot Training Level | C197ECCE BCA99B89 |
| Unlock Rapid Fire Training Level | CE949702 BCA99B86 |
| Infinite Ammo on Rapid Fire Training Level | C19D3C7E BCA99B89 |
| Unlock Chain Reaction Training Level | CE94970E BCA99B86 |
| Infinite Ammo on Chain Reaction Training Level | C19CB33E BCA99B89 |
| Unlock High Noon Training Level | CE94970A BCA99B86 |
| Infinite Ammo on High Noon Training Level | C19A342E BCA99B89 |
| Unlock Save Andromeda Training Level | CE949716 BCA99B86 |
| Infinite Ammo on Save Andromeda Training Level | C19E6D6E BCA99B89 |
| Unlock Six Shooter Training Level | CE949712 BCA99B86 |
| Infinite Ammo on Six Shooter Training Level | C191345E BCA99B89 |
| Unlock Who's The Boss Training Level | CE94971E BCA99B86 |
| Infinite Ammo on Who's The Boss Training Level | C19F997E BCA99B89 |
| Unlock Great Britain Race | CE949BE6 BCA99B84 |
| Unlock France Race | CE949BE2 BCA99B84 |
| Unlock Germany Race | CE949BEE BCA99B84 |
| Unlock Italy Race | CE949BEA BCA99B84 |
| Unlock Switzerland Race | CE949BF6 BCA99B84 |
| Unlock Mighty Joe Episode 2 | CE949A8A BCA99B84 |
| Unlock Mighty Joe Episode 3 | CE949A96 BCA99B84 |
| Unlock Mighty Joe Trilogy | CE949A92 BCA99B84 |
