All cards
 
 Enter the sound options, highlight "Mono", then hold X and press
 Right, Up, Right, Up, L1, R2, L1, R2.
 
 Bio Rhythm
 
 Select the "End" command and highlight the first option. Then, hold
 X, press Right(4), L1, Up, Start, Right.
 
 All mini-games
 
 At the title screen, hold R1 and begin playing a mini-game. After
 completing the mini-game, hold X + Triangle at the summary screen to
 access all other mini-games.
 
 Inner mode
 
 When the SD character begins moving while the game loads, hold X and
 press Right, Up, Left, Up, Right, Down, Left, Up, Triangle.