Regain energy:
Hold L1 + L2 + R1 + R2 when given a choice to hit the heavy or speed bag between
fights. Two to eight points of energy will be regained, depending on how long
the buttons are held.
Fight as a bear:
Press Right + Square, Right + Triangle, Right + Circle, Right + X at the main
menu. A sound will confirm correct code entry. Select any boxer to fight as a
bear.
Big head boxers:
Press Left + Circle, Left + Triangle, Left + Square, Left + X at the main menu.
A sound will confirm correct code entry.
Mutant Freak Of Nature Mode
Save a game onto your memory card with the fighter name PSIRULES.
Your character will be a superhuman mutant beast! Lookout!