Pause the game, hold all four shoulder buttons, and enter codes:

Baby Co-stars: 
Square, Square, Square, Square, Circle, Square, Square, Square, Square, Square. 

Big Plankton:
Square, Square, Square, Square, Circle, Square, Cricle, Square, Circle, Circle, Circle, Circle. 

Cheery Villagers:
Square, Square, Square, Square, Square, Circle, Square, Circle, Square, Circle, Circle, Square. 

Expert Mode:
Circle, Circle, Circle, Square, Square, Circle, Circle, Circle, Square, - , Circle, Square, Square, Square, Circle, Square, Square. 

Get 10 Spatulas: 
Circle, Square, Square, Circle, Circle, Square, Square, Circle. 

Get 1000 shiny objects:
Square, Circle, Circle, Square, Square, Circle, Circle, Square. 

Get Bubble Bowl power up:
Circle, Square, Circle, Square, Circle, Circle, Square, Square. 

Bubble power up:
Square, Circle, Square, Circle, Square, Square, Circle, Circle Get Cruise. 

Modified Cruise Bubble controls:
Circle, Circle, Circle, Circle, Square, Square, Circle, Circle, Square, Circle, Square, Square. 

No Pants Spongebob: 
Circle, Circle, Circle, Circle, Square, Circle, Circle, Square, Circle, Square, Square, Circle. 

Panhandlers:
Square, Square, Square, Square, Square, Circle, Sqaure, Circle, Square, Square, Circle, Circle. 

Restore Health:
Circle, Circle, Circle, Circle, Square, Circle, Square, Circle, Square, Square, Square, Square. 

Shiny Objects worth more:
Square, Circle, Square, Circle, Circle, Square, - , Circle, Circle, Circle, Square, Square, Square, Square, Circle, Circle, Square. 

Shrapnel Death Spongebob: 
Circle, Circle, Circle, Circle, Square, Square, Circle, Square, Circle, Circle, Circle, Square. 

Small People:
Square, Square, Square, Square, Square, Circle, Square, Circle, Square, Circle, Square, Circle. 

Swap camera controls left and right: 
Circle, Circle, Circle, Circle, Square, Square, Circle, Circle, Circle, Circle, Square, Square. 

Swap camera controls up and down: 
Circle, Circle, Circle, Circle, Square, Circle, Circle, Circle, Circle, Circle, Circle, Square. 

Unlock all monsters in gallery: 
Circle, Square, Circle, Square, Square, Circle, Square, Circle. 

Unlock Art Gallery: 
Square, Circle, Square, Circle, Circle, Square, Circle, Square.

Villager heal player: 
Square, Square, Square, Square, Square, Circle, Square, Circle, Circle, Circle, Square, Square. 

Villagers give dollar when hit: 
Square, Square, Square, Square, Square, Circle, Square, Circle, Circle, Square, Circle, Square.