Massive Mass: Hold L and R and press C-Up, C-Down, C-Left, C-Right.
Killer Rats: Hold L and R and press Z, Z, Z, Z.
New York Cabs: Press R, L, Z, C-Up, C-Down, C-Up.
Resurrect In Place: Hold Z and C-Left and press C-Right, then hold Z and C-Right and press C-Left.
Frame Scale: Hold Z and C-Down and press C-Up, then hold Z and C-Up and press C-Down.
Tire Scaling: Hold Z and C-Left and press C-Right, then hold Z and C-Right and press C-Left.
Auto-Abort: Quickly press C-Up four times.
Game Timer: Hold Z + C-Down, press C-Up, then hold Z + C-Up and press C-Down.
Gravity: Hold Z, and press C-Left, C-Up, C-Right, C-Down 3 times.
Car Collisions: Hold L and R, and press C-Left, C-Up, C-Right, C-Down 3 times.
Cone Mines: Hold Z, and tap L and R 4 times.
Car Mines: Tap Z and C-Up, then C-Right, C-Down, C-Left 6 times.
Track Orientation: Hold L and R, and press C-Up, C-Right, C-Down, C-Left 4 times.
Super Speed: Hold L and R and press C-Up, C-Down, C-Left, C-Right.
Inside-Out Car: Hold C-Right and C-Down, and press L, R, Z.
Damage: Press R, C-Down, L, 2 times.
Invincibility: Press L, C-Up, R two times.
Invisible Car: Hold L and R, and press C-Up, C-Down 5 times.
Invisible Track: Hold L and R, and press C-Down, C-Up 5 times.
Brakes: Hold C-Up and C-Right, and press Z 3 times.
Super Tires: Hold L and R, and press C-Up, C-Right, C-Down, C-Left 2 times.
Suicide Mode: Hold Z, and press C-Down, C-Left, C-Up, C-Right 2 times.
Do the Dew!: Press L + R + C-Down, then L + R + C-Left, then L + R + C-Up, then L + R + C-Right twice, then press Z.
Levitation: Hold L, R, and Z, and hit C-Up 4 times.
Fog Color: Hold Z, and press C-Left, C-Up, C-Right, and C-Down 3 times.
Stunt Mode: Hold all four C buttons and press R, A, Z, L.