South Park 

Cheat Codes 
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