Unlock All Characters:
At the main menu, press L2, R2, L2, R2, Up, Right, Down, Left, L1, R1.
Left Handed Players:
When selecting a character, hold SELECT + L2 and press X. Your
character will swing left handed.
Different sounds (Japanese version):
At the main menu, press L1, R1, L2, R2, L1, R1, L2, R2. For every
time you enter the code, the sound effects for your character will
Different balls (Japanese version):
Just before hitting the ball, While you see the swing meter,
press L2 + R1 + Triangle. Change the balls shape by pressing Left or