Pause the game, then hold L1 + L2 + R1 + R2 and enter a code:
Spongebob Disintigrated When Killed: Circle, Circle, Circle, Circle, Square, Square, Circle, Square, Circle, Circle, Circle, Square
Unlock All Monsters in Monster Gallery: Circle, Square, Circle, Square, Square, Circle, Square, Circle
Cheerleader Villagers: Square, Square, Square, Square, Square, Circle, Square, Circle, Square, Circle, Circle, Square
1,000 Shiny Objects: Square, Circle, Circle, Square, Square, Circle, Circle, Square
10 Gold Spatulas: Circle, Square, Square, Circle, Circle, Square, Square, Circle
Bubble Bowl Power: Up, Circle, Square, Circle, Square, Circle, Circle, Square, Square
More Valuable Shiny Objects: Square, Circle, Square, Circle, Circle, Square, Circle, Circle, Circle, Square, Square, Square, Square, Circle, Circle, Square
Cruise Bubble Power: Up, Square, Circle, Square, Circle,, Square, Square, Circle, Circle
Expert Mode: Circle, Circle, Circle, Square, Square, Circle, Circle, Circle, Square, Circle, Square, Square, Square, Circle, Square, Square
Giant Plankton: Square, Square, Square, Square, Circle, Square, Circle, Square, Circle, Circle, Circle, Circle