LocoRoco Cheats for PSP
At the World Map select a level so the 'Start? Yes / No' message appears on the screen and then hold L & R and input the following codes without the quotes to unlock the corresponding effects.
Unlock ALL Stages:
Enter 'SLACRLOCOROCO'.
Unlock 10,000 Coins:
Enter 'TARSLOCOROCO'.
Unlock ALL the Muimui:
Enter 'ALLCOLORSLOCOROCO'.