All cards:
Highlight Mono at the sound options, then hold X and press Right, Up, Right, Up, L1, R2, L1, R2.
Bio Rhythm:
Highlight the first option at the End command, then hold X, press Right, Right, Right, Right, L1, Up, Start, Right.
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Starlight Scramble Cheats, Codes & Walkthrough/Guide/FAQ for PlayStation from Cheat Code Central
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