Enter these codes at the screen just before choosing a player.

All Boost Circle, R1, R1, Circle, R2, Start
No power-ups Square, Square, Circle, Square, R2, Square, Start
No drones Square, Square, Circle, Circle, L1, R1, Start
Clone mode L1, L2, L2, Circle, L1, Circle, Start
All Snow Bombs and Randoms Circle, Circle, R1, R2, Start
Expert mode Circle, Square, Circle, Circle, Square, Start
All Grappling Hooks and Randoms Circle, Circle, L2, Circle, Circle, L1, Start
All Rooster Tails R1, R2, L2, L1, Square, Start
All Random pick-ups R1, R2, Square, Circle, R1, R2, Start
Super boost wheelie Circle, L1, Square, R2, Square, L2, Start
Everyone invisible Square, Circle, Square, R2, Circle, Circle, Start
All Atomic Snowballs Square, Square, Square, L1, Circle, Start