Surround (Chase) - Atari 2600

Complete Atari 2600 Game Library (252 items)
list by Prelude

Game Console Launch Titles (288 items)
list by CelShader

Played (284 items)
list by Neko

Atari 2600 (284 items)
list by diabolical dr voodoo

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.