Below is the complete list of cheats in CTTR. To enter them, go to the title screen, hold R1 and L1, and enter the following for any cheat.

Japanese Crash: SQUARE, CIRCLE, SQUARE, CIRCLE (Note: This cheat triggers an annoying glitch)

One-Hit KO: X, CIRCLE, CIRCLE, X (This does NOT count as a KO for extra coins)

Chicken Heads: X, CIRCLE, CIRCLE, SQUARE (This affects the NPCs only, and their heads explode if you attack them)

Disable HUD: X, SQUARE, TRIANGLE, CIRCLE (Note: You will not see anything during play)

Baby Block Cars: CIRCLE, CIRCLE, TRIANGLE, SQUARE (This only works outside the park, and only your character is affected)

Faster Cars: CIRCLE, CIRCLE, TRIANGLE, TRIANGLE (This may cause out of control driving)

If you entered any of these cheats correctly, you will hear a chime.