Quote Originally Posted by Divinus Arma View Post
Damn! I am convinced this game is giving me migraines!

I play for an hour at a time, and by the end of that hour I have a horrific left hemisphere migraine. I would normally play a game, like TW, for 8 -10 hrs a strecth with no problem. I have never had anything like this before. I can't even even play it anymore. This has been going on for three days and only with Civ IV. Bizarre!
My guess is a kind of graphic glich, that you aren't aware of. Test checking the net and testing other graphic settings. Another thing could be the sound, but that's more unlikely that there's something that you don't notice.

Personally I don't have that problem with Civ IV, so I doubt that it's a general problem as if things are wrong I can get headaches pretty easily.