The cheats listed below should be inserted at the game's main menu. All cheats must be inserted while holding down the R1 and L1 buttons.

Chicken-Headed People - X, Circle, Circle, Square
Death Sequence Disabled - X, Triangle, Triangle, Triangle
Easy Kills - X, Circle, Circle, X
Higher Speeds Than Normal - Circle, Circle, Triangle, Triangle
HUD Disabled - X, Square, Triangle, Circle
Japanese Design - Square, Circle, Square, Circle
Toy Car - Circle, Circle, Triangle, Square