Mario Kart for the GBA is really good
The best racer to me is Toad because he moves with speed and can take corners kind of good. You mst race in either Mushroom Cup, Flower Cup, Lightning Star Cup, Special Cup.
I think Rainbow Road is the easiest track in this game because I learned how to play there really good and I barely fall off now. The hardest track is Luigi Circuit in 150cc because the turns are sharp and the other racers take it well.
Mario Kart Super Circuit is a really good game. The best racing game on the GBA!