Not the worst, actually the best!
But the sound was really crappy, and the sprites (or whatever) seemed to come from GameBoy ADVANCE. When Tails fly in the air he gets tired too soon he can handle a few more seconds fix that, it's a bit slow also but hey! don't blame this guy for not making this game the most absolute best with everything!
Another thing, the ring counter at the end, starts when the music is about 1-3 seconds be4 ending. But it's a good game, and some thingies are better than the original actually, like the rings doesn't scatter everywhere so you don't have a chance picking them up.