Cheat menuAt the main menu, press Left(2), L(2), Right(2), Left(2) in the NTSC version of the game. For the PAL version of the game, press Left, Down, L(2), Up, Right, Left, Up.
Enable the “Cheat menu” code. Then at the main menu, press R, C-Right , Right, L, C-Left , Left, C-Right, Right in the NTSC version of the game. For the PAL version of the game, press R, C-Right, Down, L, C-Up, Left, C-Right, Left.
Enable the “Cheat menu” code. Then at the main menu, press R(7), Left in the NTSC version of the game. If you entered the code correctly, you will hear a sound. Now an option for invincibility will appear on the cheat menu. For the PAL version of the game, press R, C-Right, R, L, R(3), Left.
Enable the “Cheat menu” code. Then, press L(3), C-Right, Right, Left(2), C-Left in the NTSC version of the game. For the PAL version of the game, press R, L, R, C-Down, Right, Up, Left, C-Up.
Enable the “Cheat menu” code. Then, press L, C-Left, Left, R, C-Right, Right, Left(2), Right in the NTSC version of the game. If you entered the code correctly, you will hear the sound of a siren. Now an option to toggle monsters on/off will appear on the cheat menu. For the PAL version of the game, press L, C-Up, Left, L, C-Down, R, L, R.
While flying with the jet pack, enable the “All items” code.
Start a game in co-op or deathmatch mode. Enable the “All items” code and the “Friendly Fire” option. Now have one player shoot the other player with the expander gun. Enable the “Invincibility” code before the first player explodes, then disable “Invincibility”.
Start a game in co-op or deathmatch mode. Enable the “All items” code and the “Friendly Fire” option. Now have one player shoot the other player with the shrinker gun. Enable the “Invincibility” code, then disable “Invincibility”.
Destroy a fire hydrant, or another water source. Then, stand in the water and hold A to slowly restore health. Alternatively, stand in front of a toilet or urinal and press A.
| Infinite Health Level 1 | 80247463 00FF |
| Infinite Ammo (Pistol) | 802A5A01 00FF |
| Have All Keys | 802A5A47 000F |
| Have Shotgun | 802A5ABB 0001 |
| Infinite Ammo (Shotgun) | 802A5A03 00FF |
| Have Sub Machine Guns | 802A5ABC 0001 |
| Infinite Ammo (SMG’s) | 802A5A05 00FF |
| Have Grenade Launcher | 802A5ABD 0001 |
| Infinite Ammo (Grenade Launcher) | 802A5A07 00FF |
| Have Pipe Bombs | 802A5ABE 0001 |
| Infinite Ammo (Pipe Bombs) | 802A5A09 00FF |
| Have Shrinker | 802A5ABF 0001 |
| Infinite Ammo (Shrinker) | 802A5A0B 00FF |
| Have Expander | 802A5AC0 0001 |
| Infinite AMmo (Expander) | 802A5A0D 00FF |
| Have Missile Launcher | 802A5AC1 0001 |
| Infinite Ammo (Missile Launcher) | 802A5A0F 00FF |
| Have Plasma Cannon | 802A5AC2 0001 |
| Infinite Ammo (Plasma Cannon) | 802A5A11 00FF |
| Have Laser Trip Bomb | 802A5AC3 0001 |
| Infinite Ammo (Laser Trip Bomb) | 802A5A13 00FF |
| Infinite Armor | 812A5A92 0064 |
| Infinite Vitamin K | 812A5A90 0190 |
| Infinite Jet Pack | 812A5A8E 0640 |
| Infinite Scuba Gear | 812A5A8C 1900 |
| Weapon Equipped Modifier | 802A5A23 000? |
| Open Cheat Menu | 801012D8 0001 |
| Open Invincibility Cheat | 801012DC 0001 |
| Open Monsters Cheat | 801012E0 0001 |
| Open All Items Cheat | 801012E4 0001 |
| Open Goto Level ?? Cheat | 801012E8 0001 |
