Select "Enter Cheat" from the main menu. Then, enter one of the following codes to activate the corresponding cheat function. If you entered the code correctly, the cheat will be displayed on the screen. Press Left, Right, C-Left, or C-Right to change the letter on the "Cheesy Poofs Secret Decoder". Press Start or A to enter a letter. Press B to enter the cheat. Select the "Cheats" option and set each enabled code as desired. All cheats entered can be saved after reaching a save point.

Code	Result
BOBBYBIRD	All cheats enabled
THEEARTHMOVED	Level select
ASSMAN	Invincibility
FATKNACKER	All weapons
FATTERKNACKER	Infinite ammo
OMGTKKYB	All characters in multi-player mode
SLAPUPMEAL	Starvin Marvin unlocked
PHAERT	Phillip unlocked
RAFT	Terrance unlocked
DOROTHYSFRIEND	Mr. Garrison unlocked
CHEATINGISBAD	Mr. Mackey unlocked
LOVEMACHINE	Chef unlocked
CHECKATACO	Wendy unlocked
FISHNCHIPS	Pip unlocked
KICKME	Ike unlocked
ALLWOMAN	Ms. Cartman unlocked
GOODSCIENCE	Mephisto unlocked
STARINGFROG	Jimbo unlocked
HAWKING	Ned unlocked
OUTRAGE	Big Gay Al unlocked
ELVISLIVES	Officer Barbrady unlocked
MAJESTIC	Alien unlocked
VEGGIEHEAVEN	Skinny unlocked
MEGANOGGIN	Big head mode
PLANEARIUM	Pen and ink mode
SCREWYOUGUYS	View credits