cwbys21 on 15 June 2008
It is probably because in FPS games the camera moves every time you so much as think about touching the analog stick and it gives you slight motion sickness which translates to a head ache. I used to get that myself until I toned down the graphics on my PC some and sat a touch further away. If you can sit further away and try not to whip the camera around as much and every chance you get close your eyes or look away from the screen to give your brain a rest.
