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Sony PSP - Exit cheats

Unlock Situation 8:
Go to the title screen and press L, R, Left, Right, Square, Circle, X, Triangle

Unlock Situation 9 :
Unlock Situation 8, Go to the title screen and press 
Triangle, Down, Circle, Left, X, Up, Square, Right

Unlock Situation 10:
Unlock Situation 9, go to the title screen and press
Right, Down, Up, Left, Circle, X, R, L