Arctic Thunder

Get Expert mode
At the screen after start right before you pick

a player put in the following code: 

Y, X, Y, Y, X, Start

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

No Power-ups mode
At the screen after startup (before choosing a

player), press X, X, Y, X, R, X, Start.