K won't be right off cause I have to write some articles on slimy invertebrates but soon. Any of you ever try RTCW? Its bought, though - but only $10 these days. There's also RTCW-Enemy territory which is totally free though: cool first-person.
mtw, diablo 2, jedi academy, any of the command & conquer series, starcraft, triplea (free axis & allies clone for online play...highly recommended), warcraft 2 or 3....i could go on and on.