All boxers: Enter MIKE TYSON as a name.
All arenas: Enter LENNOX LEWIS as a name.
God mode: Enter MUHAMMAD ALI as a name.
Big head mode: Enter DAVID TUA as a name.
Dumb CPU boxers: Enter JESSICA MELTON as a name.
Gassy boxers: Enter ADAM GARDNER as a name.
Fight as practice robot: Successfully complete training mode.
Alternate costumes: Successfully complete Boxers Life mode with a boxer
to unlock a new costume for that character.
Restore energy: Rapidly press A repeatedly after getting knocked down to
restore a small amount of energy and help prevent a knockout.
Invincibility: Select the "Cheat"
option at the "Setup" menu. Then, press Start, A(2), Y(2), Z(2), X(2),
Start. Note: This code can be enabled on controller one for player one or
controller two for player two.
Turbo mode: Select the "Cheat" option at the "Setup" menu. Then,
press Start, Z(10), Start.
Constant power-ups: Select the "Cheat" option at the "Setup" menu.
Then, press Start, A, Y, A, Y, A, Y, X(3), Start. Note: This code can be
enabled on controller one for player one or controller two for player two.
Conversation mode: Select the "Cheat" option at the "Setup" menu.
Then, press Start, Z, A, Y, X, Z(3), Start.
Intercontinental Tournament: Select the "Cheat" option at the
"Setup" menu. Then, press Start, A(3), Y(3), X(3), Start. Alternately, win
all five default tournaments to unlock the Intercontinental Tournament.
All boxers' Life mode: Select the "Cheat" option at the "Setup"
menu. Then, press Start, A, X, Y, Z, A, X, Y, Z, Start.
Scrap Yard arena: Select the "Cheat" option at the "Setup" menu.
Then, press Start, Y, Z, Y, Z, A(2), Start. Alternately, win all survival
modes to unlock the Scrapyard arena.
Fight as King Khan: Win the Top Contender Tournament.
Fight as Matador: Win the Intercontinental Tournament.
Fight as Odiva: Win the Pro Tournament.
Fight as Old Master: Win the World Championship Tournament.
Fight as Training Robot: Successfully complete training mode.
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