IK+: Chop 'n' Drop Codes -

Invincibility:
Press [Space] to pause game play after getting hit. Note: This will also affect CPU controlled opponents.

Pull down your pants:
Press T to pull down your pants.

Change pants color:
Press J when the old man at the end of a fight his talking to change the color of his pants.

Change shield logo:
Press B during a special bonus to change the logo on your shield.