Not many that would stand the test of time unfortunately. I remember sinking lots of hours into a racing game I found like that, I think it was called Breakneck. And an RTS called Tzar. Those are the two I remember the most.
Its half-dozen or so robo-players made the game come to life.
They all bantered back and forth, made pop culture references, etc., got vindictive...
I printed physical cards, made a Geocities website for it (still zombie-mode on "oocities"!), learned Photoshop just so I could make my own higher-fidelity cards, and when I finally learned to program I started on a new version only to get a Cease and Desist from Mattel. Heh.
Meanwhile, I and a couple other fans tracked down the original authors via a Yahoo Groups channel and learned about the original game...
