Mike Tyson Heavyweight Boxing Cheat mode
At the “Press Start” screen, press Square, Circle, L2, R2 to unlock all boxers, arenas, and game modes.
Extra custom boxer textures
At the “Press Start” screen, press L1, R1, X(2), Triangle, X to unlock additional custom boxer textures.
Alternate credits
At the “Press Start” screen, press X, Triangle, Square, Circle to alternate the credits.
Big head mode
At the “Press Start” screen, press Square, Circle, Up, Down.
Small head mode
At the “Press Start” screen, press Square, Circle, Down, Up.
Flat mode
At the “Press Start” screen, press Down, Up, Circle, Square.
Super mutant mode
At the “Press Start” screen, press Square, Left, Up, Triangle.
All boxers
Win the Bronze, Silver, and Gold belts to unlock all boxers including Mike Tyson.
Mike Tyson challenge
Defeat Mike Tyson and win the Gold belt to unlock the undisputed champ mode.
Play as Iron Mike
Win the Mike Tyson challenge to unlock Iron Mike, the early version of Mike Tyson.
| Master Code (Must Be On) | 0E3C7DF2 1853E59E EE83A322 BCC8427A |
| Unlock Silver Title | CE9AC42A BCA99B84 |
| Unlock Gold Title | CE9AC432 BCA99B84 |
| Unlock Tyson’s Challenge | CE9AC4C2 BCA99B84 |
| Unlock Maskaev | CE9AC44A BCA99B84 |
| Unlock Grant | CE9AC452 BCA99B84 |
| Unlock Nicholson | CE9AC45A BCA99B84 |
| Unlock Johnson | CE9AC462 BCA99B84 |
| Unlock Byrd | CE9AC46A BCA99B84 |
| Unlock Tua | CE9AC472 BCA99B84 |
| Unlock Witherspoon | CE9AC47A BCA99B84 |
| Unlock Williams | CE9AC402 BCA99B84 |
| Unlock Holmes | CE9AC40A BCA99B84 |
| Unlock Rahman | CE9AC412 BCA99B84 |
| Unlock Tyson | CE9AC41A BCA99B84 |
| Unlock Iron Mike | CE9AC422 BCA99B84 |
| Player 1 Codes | |
| Infinite Health | CE95AA58 BCA9DD4B CE95AA64 BCA9DD4B CE95AA60 BCA9DD4B CE95AA6C BCA9DD4B |
| Low Health | CE95AA58 BCA9DB8B CE95AA64 BCA9DB8B CE95AA60 BCA9DB8B CE95AA6C BCA9DB8B |
| Infinite Energy | CE95AA40 BCA9DD4B CE95AA4C BCA9DD4B |
| No Energy | CE95AA40 BCA9DB83 CE95AA4C BCA9DB83 |
| Easily TKO’d | 0E95AA0A BCA99B83 CE95AA0A BCA99B85 |
| Never TKO’d | CE95AA0A BCA99B83 |
| Player 2 Codes | |
| Infinite Health | CE95AD4C BCA9DD4B CE95AD48 BCA9DD4B CE95AD54 BCA9DD4B CE95AD50 BCA9DD4B |
| Low Health | CE95AD4C BCA9DB8B CE95AD48 BCA9DB8B CE95AD54 BCA9DB8B CE95AD50 BCA9DB8B |
| Infinite Energy | CE95ADB0 BCA9DD4B CE95ADBC BCA9DD4B |
| No Energy | CE95ADB0 BCA9DB83 CE95ADBC BCA9DB83 |
| Easily TKO’d | 0E95AD7A BCA99B83 CE95AD7A BCA99B85 |
| Never TKO’d | CE95AD7A BCA99B83 |