Puyo Puyo 4 Codes -

Play as Doppelganger Arle:
Successfully complete the game in story mode. Pass the ranking screen after the credits and select free play or versus mode. Hold L approximately half-way and press Y, then move to the left of Satan or to the right of Scheze at the character selection screen.

Play as Carbuncle:
Successfully complete the game in story mode. Pass the ranking screen after the credits and select free play or versus mode. Hold R approximately half-way and press Y, then move to the left of Satan or to the right of Scheze at the character selection screen.

Hidden artwork:
Place the game disc in a PC compatible CD-ROM drive to find an "omake" file that contains a hidden image.