All of the following cheats are to be entered during the opening sequence, after the compile screen.

Effect	Code
Inverts the Puyos' colors	1+2+Start
Makes Puyos have a human form	Left, Up, Left, 2, 1. A sound effect will play if correct.
Puyos will have a different form for each opponent	Up, 1, Down, 2, Right, 1, Left, 2 (16 times). A sound effect will play if correct.