I've gotten motion sickness on a few games, consistently, but not all. I could only play Hexen 2 for a couple hours at a stretch or I'd get headachey and sick to my stomach (though I'm not ruling out the game itself as the cause, in retrospect). I also got it with Q3. Still, I played U1, UT99, UT2K3/4, HL, HL2, Deus Ex,…