Grade: D- (61.28)
This one might remind you of the light cycles in TRON. It's the same concept. Try to box in your opponent and make him run into your tail, his tail, or the wall. This goes to show you that some of the simplest concepts and graphics can be turned into pretty enjoyable games. Alternately, you can play Video Graffiti, in which you make pretty pictures with your dot and its tail, sort of like an Etch-a-Sketch.
Images from www.atariage.com (used by permission)
Descriptions from www.atariguide.com (used by permission)