Japanese Crash
At the main menu, hold L1 + R1 and press Square, Circle, Square, Circle. If you entered the code correctly, you will hear a soft sound.

One-hit knock outs
At the main menu, hold L1 + R1 and press X, Circle(2), X. If you entered the code correctly, you will hear a soft sound.

High Speed mode
At the main menu, hold L1 + R1 and press Circle(2), Triangle(2). If you entered the code correctly, you will hear a soft sound.

Toy block cars
At the main menu, hold L1 + R1 press Circle(2), Triangle, Square. If you entered the code correctly, you will hear a soft sound.

Chicken heads
At the main menu, hold L1 + R1 and press X, Circle(2), Square. If you entered the code correctly, you will hear a soft sound.

Disable HUD
At the main menu, hold L1 + R1 and press X, Square, Triangle, Circle. If you entered the code correctly, you will hear a soft sound.