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Platform: Playstation

Codes For Invasion From Beyond
Invasion From Beyond

Press L1, R1, L2, R2, Triangle, X, Circle, Square(2), Circle, X, Triangle at the "Press Start" screen. Return to the "Start Mission" screen to select any level in the game.

Press L1, R1, L2, R2, Up, Down, Right, Left(2), Right, Down, Up at the "Press Start" screen.