Get Grappling Hooks and Random Mode:
At the screen after start right before you pick a player put in the following code: Y, Y, L, Y, Y, White, Start

Get Rooster Tails:
At the screen after start right before you pick a player put in the following code: Black, R, L, White, X, Start

Get No Drones:
At the screen after start right before you pick a player put in the following code: X, X, Y, Y, White, Black, Start

Get All Randoms:
At the screen after start right before you pick a player put in the following code: Black, R, X, Y, Black, R, Start

Get Atomic Snowball:
At the screen after start right before you pick a player put in the following code: X, X, X, White, Y, Start

Get Clone Mode:
At the screen after start right before you pick a player put in the following code: White, L, L, Y, White, Y, Start

Get Invisible Mode:
At the screen after start right before you pick a player put in the following code: X, Y, X, R, Y, Y, Start

Get Boost Mode:
At the screen after start right before you pick a player put in the following code: Y, Black, Black, Y, R, Start

Get Super Boost Wheelie:
At the screen after start right before you pick a player put in the following code: Y, White, X, R, X, L, Start

Get All Snow Bombs & Random Mode:
At the screen after start right before you pick a player put in the following code: Y, Y, Black, R, Start