Men in Black
Passwords

Level 2: Manhattan Password: 2710
Level 3: Sewer System Password: 1807
Level 4: Aerodome Password: 0309
Level 5: Rooftops Password: 2705
Level 6: Woods Password: 3107
Stage Skip Password: 2409 (pause and press select to skip)
End of Game Password: 1943
Fly Mode Password: 0601 (hold SELECT and Up to take off, use select to land)

Montezuma's Return
Passwords

ELEPHANT - Unlimited Lives
SUNSHINE - Walk Through Doors

Mysterium
Level Skip

Push Select to get your inventory. Now go to the map screen. At the map screen push B, Select, Down at the same time. This cheat will warp you one level down.

Inventory Overload

To get an inventory overload that gives you weapons and the fabbled golden wand go to your map screen press B, Select, Down all at the same time. Now go to your inventory and see all of your new weapons.

Mercenary Force
Earn Money

Press Up, Select, A, B at the title screen to start with 50,000 yen.

Level Select

After you put in the 50,000 yen code and pick your men press START to start the game. When it says "round 1" press RIGHT and you can pick through rounds 1-6.

Mortal Kombat
Play as Goro

To play as Goro, you must first defeat the game normally. Now sit back and watch the credits. When "The End" appears, hold UP, LEFT, SELECT, and A. Enter your initials and press A.