Bonus Cars

At the press start screen, press L+R,C-Left,C-Right,L+R. Then at the options screen, hold Z & press L until the cheat mode appears.

Contributed by: Ben Zetlitz 

Cheat Menu

At the press start screen, press L+R,C-Left,C-Right,L+R, & then press Start. At the next screen, hold Z & press L until the cheat mode appears

Contributed by: Ben Zetlitz 

Quick Restart

Press Analog-stick Left + A + B + C-Down + C-Left after crashing. You will be immediately repositioned in the center of the track.

Contributed by: sportsguy3675 

Debug mode

Just after the "Made in Eden screen" repeat this sequence a lot of times

While holding L+R, press C< then C>. Release L+R
While holding L, press Z. Release L

Repeat that sequence a lot of time quickly before the title screen

Contributed by: t-baar 

Get All Cars

Hold A+B+SELECT and turn the Game Boy off and then back on. It should say Select if done correctly.

Contributed by: smallfry645 

Tracks in Arcade Mode

Contributed by: matt91486