Unlockables
So you want to know how to get everything in Mario Kart Super Circuit eh? Well, there's a guide here, but I'm warning you it ain't easy to do. Get your fingers 'n thumbs ready and some batteries for your Advance, because getting the SNES tracks ain't easy!
Special Cup
To get the Special Cup complete the first 4 Cups with a "Gold" trophy. To get the Special Cup for each class, you'll need to do what I just said for each class. Simple as that!
SNES Tracks
To unlock the legendary Super Mario Kart SNES tracks AKA the "Extra Cups", you must first unlock the Special Cup. Then you must get Gold in all Cups whilst getting at least 100 coins for each Cup. Not an easy job to do, but its worth it. The Extra Cups can be accessed by pressing L and R on the cup select screen.
New Title Screen
To get a fancy new title screen, complete all Cups in all classes in first place. It will change the background from blue to red. It looks so cool!
Deleting Your Progress
If you want to wipe the slate clean, start the game from scratch, delete all of your saved data; hold L, R, B and Start as you switch on your Game Boy Advance, with your Mario Kart Super Circuit cart in of course.