Good, but needs improvment.
The premise is good, but for a game that's supposed to be really fast paced, you're either running at insane speeds because you managed to pick up a piece of pizza or a shield, or you're crawling along at a snail's pace because you've hit too many mines. It was either one extreme or the other. The screen is just way too crowded for one to focus well enough.
When playing it for the first time, this game requires hair-line precision, and split-second reaction time. Not everyone has that, unfortunately.
So unless you have completely memorized the courses, it's impossible for you to get through without eventually returning to a snail's pace. Again, not everyone can do this.
This is a game that people will either love or hate, unfortunately. There's just too much punishment, and not enough reward. For masochists only, I'm afraid.