We have 1 cheats and tips on PSP. If you have any cheats or tips for Puyo Puyo! 15th Anniversary please send them in here. We also have cheats for this game on : PlayStation 2 : Nintendo DS : Wii
You can also ask your question on our Puyo Puyo! 15th Anniversary Questions & Answers page.
At the 'Title' screen hold L + R and press Up, Down, Right, Left, Triangle, X, Square, circle to unlock ALL hidden characters, rulesets and other settings. If the code has been entered correctly you will hear a chime as confirmation.