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Playstation - A-Train cheats

Unlimited money cheat:
Push L1 + L2 + R1 + R2, then press Square + Triangle + Start buttons at 
the title screen. The map selection screen should be appear. Then hold 
L1 + L2 + R1 + R2 and hit Circle. Sound will confirm the correct code 
entry. Start to play, then press pause and push Left, Right, Up, or 
Down button to get more money.