Password - Unlock all boxers, arenas, game modes, and more... |
Enter any of the following codes at the ''Press Start'' title screen. Visible confirmation will be given when a code is entered correctly.
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| Big Heads | Square, O, Up, Down |
| Unlock coder credies (I beleive this just changes the credits, but I didn't pay much attention to it) | X, Triangle, Square, Circle |
| Additional custom boxer textures (brow styles, tattoos, etc.) | L1, R1, X, X, Triangle, X |
| Platinum unlock (all boxers, arenas, game modes, etc.) | Square, Circle, L2, R2 |
| Small head mode | Square, Circle, Down, Up |
| 2D/flat mode | Down, Up, Circle, Square |
| Super mutant mode (characters grow and shrink randomly) | Square, Left, Up, Triangle |
| Big head mode | Square, Circle, Up, Down |
Unlockable - Unlockable Features |
| Unlock "Iron Mike" | To unlock ''Iron Mike'' you have to beat ''Tyson's Challenge'', ''Iron Mike'' is Mike Tyson in his prime. A younger, better, undefeated version of Mike Tyson. |
| Unlock Undisputed Champ Mode | To unlock Undisputed Champ mode, you have to beat Gold Title Belt mode. Undisputed Champ mode is where you see if you can beat all the boxers in the game in a three minute round each. |
| Unlock All Boxers and the Mike Tyson Challenge | You must win the Bronze, Silver and Gold belts to unlock all fighters. To unlock the Mike Tyson challenge you must defeat Mike Tyson in the Final Fight for the Gold Belt. |
| Unlock Mike Tyson For 1 Player Game | To unlock ''Iron'' Mike Tyson for a One Player Game,you must win the Gold Belt. |
