Sled Storm
At the Press Start screen, hold L1 + R1, then enter the codes.
Cheat Mode - Circle, Square, Up, Circle, Triangle, Down
All Characters - Circle, Triangle, Circle, Triangle, Circle, Down
All Sleds - Circle, Square, Circle, Square, Circle, Left
All Tracks - Circle, Left, Circle, Right, Circle, Up
Hover Sled - Circle, Triangle, Square, Circle, Triangle, Right