All boxers
At the "Setup" menu, select the "Cheat" option, then press X, Circle, Square(2), R1(2), Square, Circle, X to unlock all boxers.

Invincibility
At the "Setup" menu, select the "Cheat" option, then press Start, X(2), Circle(2), R1(2), Square(2), Start. Note: This code can be enabled on controller one for player one or controller two for player two.

Turbo mode
At the "Setup" menu, select the "Cheat" option, then press Start, R1(10), Start.

Constant power-ups
At the "Setup" menu, select the "Cheat" option, then press Start, X, Circle, X, Circle, X, Circle, Square(3), Start. Note: This code can be enabled on controller one for player one or controller two for player two.

Conversation mode
At the "Setup" menu, select the "Cheat" option, then press Start, R1, X, Circle, Square, R1(3), Start.

Intercontinental Tournament
At the "Setup" menu, select the "Cheat" option, then press X(3), Circle(3), Square(3). Alternately, win all five default tournaments to unlock the Intercontinental Tournament.

Alternate costumes
At the "Setup" menu, select the "Cheat" option, then press X, R1, Circle, Square. Alternately, successfully complete Life mode with a boxer to unlock a new costume for that character.

All boxer's Life mode
At the "Setup" menu, select the "Cheat" option, then press X, Square, Circle, R1, X, Square, Circle, R1.

Scrap Yard arena
At the "Setup" menu, select the "Cheat" option, then press Circle, R1, Circle, R1, X(2). Alternately, win all survival modes to unlock the Scrapyard arena.