Every Random mode
Press R1, R2, Square, Circle, R1, R2, Start at the screen after startup (before you choose a player). Note: This will have no effect in points races.

Every Atomic Snowball mode
Press Square(3x's), L1, Circle, Start at the screen after startup (before you choose a player). Note: This will have no effect in points races.

No drones mode
Press Square(2x's), Circle(2x's), L1, R1, Start at the screen after startup (before you choose a player). Note: This will have no effect in points races.

Expert mode
Press Circle, Square, Circle(2x's), Square, Start at the screen after startup (before you choose a player). Note: This will have no effect in points races.

Every Snow Bomb and Random mode
Press Circle(2x's), R1, R2, Start at the screen after startup (before you choose a player). Note: This will have no effect in points races.

Every Boost mode
Press Circle, R1(2x's), Circle, R2, Start at the screen after startup (before you choose a player). Note: This will have no effect in points races.

Every Grappling Hook and Random mode
Press Circle(2x's), L2, Circle(2x's), L1, Start at the screen after startup (before you choose a player). Note: This will have no effect in points races.

Every Rooster Tail mode
Press R1, R2, L2, L1, Square, Start at the screen after startup (before you choose a player). Note: This will have no effect in points races.

No power-ups mode
Press Square(2x's), Circle, Square, R2, Square, Start at the screen after startup (before you choose a player). Note: This will have no effect in points races.

Super boost wheelie mode
Press Circle, L1, Square, R2, Square, L2, Start at the screen after startup (before you choose a player). Note: This will have no effect in points races.

Mooing
Enter MOO as your initials after a race.

Clone mode
Press L1, L2(2x's), Circle, L1, Circle, Start at the screen after startup (before you choose a player). Note: This will have no effect in points races.

Everyone invisible mode
Press Square, Circle, Square, R2, Circle(2x's), Start at the screen after startup (before you choose a player). Note: This will have no effect in points races.

Snowman
Win gold medals on all of the twelve tracks in race to access the Snowman character.

Every Snowmen Found bonus
Find and run over every snowmen on any given track to collect the "All Snowmen Found" bonus. Which will award 15,000 additional points.

Upgrade costs

Acceleration: 1000
Top speed: 3000
Handling: 1000 (again)