I had a game like that on my Atari as a kid. Later i learned about the Tron movie :-P. Sadly i can't *really* try it since it requires at least two players - it'd be nice if there was some simple AI for single player.
Regardles, what i really liked was the single-pixel-width vector graphics (i guess they are vector? They do look like vectors) and the overall aesthetic, though i think the game "board" (the screen where you are playing the game) could use some graphics too.
It'd be nice if it had some sound too, even if it was some PC speaker "brrrrt" sound :-P