CheatCodes.com has all the official The Simpsons Game PSP cheats to unlock everything. If you know of any that we don't have, please let us know.
All published and official codes as of Wednesday June 19, 2013 for The Simpsons Game are shown below. We also have this game on PlayStation 2, Nintendo DS, PSP, Xbox 360, PlayStation 3, Wii, and sometimes tricks from other game systems will also work on PSP.
At the Extras menu, press Triangle, Left, Right, Triangle, Square, L.
At the Extras menu, press Square, Left, Ssquare, Right, Triangle, R.
At the Extras menu, press Left, Square, Right, Triangle, Right, L.
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