Perfect Weapon

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All Sphere Mode

Pause the game and press L1 + L2 + Circle + Square.

Big Head Mode

Pause the game and press L1 + L2 + R2 + Down.

Level Select

Pause the game and press R1 + Square, Triangle, Circle, X.

Passwords

1st Moon - XSXSSCSC
2nd Moon - CXXTCCXT
3rd Moon - CTSCSSTT
4th Moon - CXXXTCTT
5th Moon - XXSXSSTC

Play as Cyborg Blake

Pause the game and press R1 + R2 + Triangle + Circle.

Unlimited Health

While playing, pause the game then simultaneously press Circle+Square+Right, then simultaneously press R1+R2+Left.