Psychonauts Codes -

All Psi powers:
Hold + and quickly press (x2), , , , while playing Psychonauts.

Maximum rank and all Psi powers:
Hold + and quickly press , , , , , while playing Psychonauts.

Full ammunition:
Hold + and quickly press , , (x2), , while playing Psychonauts.

Full arrowheads:
Hold + and quickly press , (x2), , , while playing Psychonauts.

Full lives:
Hold + and quickly press , (x2), , , while playing Psychonauts.

Invincibility:
Hold + and quickly press , , (x2), , while playing Psychonauts.

All items:
Hold + and quickly press , , (x2), , while playing Psychonauts. REMEMBER: This does not unlock the Psi-ball Colorizer or Dream Fluffs.