Super
Bust-A-Move
Another world
At the "Push Start Button" screen, press Triangle, Right, Left, Triangle. If you entered the code correctly, an icon will appear in the upper right corner of the screen. Select puzzle mode, then the "Arcade" option to access more puzzles.
Bonus characters
At the "Push Start Button" screen, press Triangle, Left, Right, Triangle. If you entered the code correctly, an icon will appear in the upper left corner of the screen.