Uniracers
Get a free .com domain name or cash for freeafter you complete several offers by email. UltraboostView the creditsStuntsGet a gold medalDo a MegaGet major stunt pointsPasswordsGame Genie codes
UltraboostTo get an ultraboost before the race starts, hold Y. Release Y when the race begins.
View the creditsAt the Title screen, hold Down and the L and R Buttons, then press B to view the credits.
StuntsTABLETOP Be airborne and TAP Z-flip to flip sidewaystap it again to re-orient yourself.HEAD BOUNCE (do whilst stationary) Press Jump, then holddown Z-flip for a few bounces.If you do a couple stunts in the air and then land you'll speed up real fast!
Get a gold medalPlay and get a bronze medal. When you get up to silver go back and play bronze again and you will get a silver medal. When you get to gold put it back on silver, finish it and you will get a gold medal. The only thing is on the stunt levels you need to get a higher score (e.g. bronze 65, silver 116 and gold 240.)
Do a MegaWhen you go up into the air hit the X button to flip upside down. Then hit the down arrowpad and X again to make yourself rightside up again! When you land it should say something about a Mega Z. 
Get major stunt pointsWant major stunt points? Go to the Ski jump stunt board, it's the third one in the Hopper circuit. Start out with 2 or 3 head bounces, then jump down the hill and do a trick or two, but be sure to land properly before you get near the jump. You should have good speed to take off from the jump. While in the air, hold right and hit z-flip and roll, then let go of the z-flip but not the roll. Continue the roll until you're just about to land. (obviously, the key here is to NOT wipeout). This will give you a major boost of speed for your next jump. For the rest of the jumps, space out your tricks (do 2 of each 4x moves, then 2 of each 3x moves, etc.) Try and vary your tricks. On the final jump (with practice, you'll know when it comes), try and do 2 4x's, a tabletop, and whatever you can fit in. 
PasswordsEnter your name as FAE DINE and you can make the other uniraces puke when you pass them.
PasswordsWSVTQ     Endless AmmoHVZSM     InvincibilityJTTSJ     Infinite LivesCTGXF     Level Skip
Game Genie codesSent in by Brian KentEE6A-C7A8     The computer controlled Uni just stays at the starting line with its brakes on for the whole race AAB4-370E     Race any track but when you are on the corse selection screen don't press up and then start where the arrow stops on Crawler and Jumper or the game will BO 3CA4-3F69     No timer in most racesD42D-4D08     Game plays at dumb speed (you go off the screen)**2D-CD08     Put anything for ** to change the color of the background and/or the track and/or your Uni and/or the computer controlled UniBOAD-3DD9     Always win in a draw of 00:00:19 C227-3DDB     Strobing background and track CFB9-3DDC     You get double and treble flips and rolls for doing just 1 roll or flip38B4-CDDB     You get a z-flip city for doing a z-flip C2AE-C469     Faster timerDE2D-4DD8     Slow Uni's (Sunday drivers)DD2D-4D08     Grandma speedBBBB-3DDB     There is no > to tell you who's in the lead