Puyo Puyo! 15th Anniversary Cheats (PS2)

Unlock Hidden Characters:

There are 6 hidden characters in the game which can be unlocked by beating them and
completing Story mode. Each character has a preset order of opponents with the fourth and
eigth opponent usually being one of the hidden characters.

Unlock New Modes:

In Story mode select the modes in the roulette. Select a '?' to reveal a new mode and
complete Story mode (you don't have to win a match in the new mode to unlock it). Each
opponent's roulette has a preset order of modes and each new style is only available to
certain opponents.

At the 'Main' menu go to 'Options' to change the shape of the Puyos used in most Single
and Multi-Player matches. Complete each character's story with an overall 'S' rank to
unlock the bonus Puyos or clear all 300 drills in Training mode.

Unlock Chalk: Clear ALL 300 drills in training 
Unlock Moji: Get 5 'S'-Ranks.
Unlock Betanuri: Get 10 'S'-Ranks.
Unlock Cube: Get 15 'S'-Ranks.
Unlock Clear: Get 22 'S'-Ranks.