I real dont understand how some people does get motion sickness from games... but just some advice, try not to stay into the game too much, every now and them during 'cool down' periods in the game, look away from the screen, streach and stuff... Personally I could go hours and it doesnt bother me, do I dunno any real adivce to give sorry...
Yea, well I went and "aquired" the game, there seems to be some problems with the cd key business, but i got a chance to play it....at first it seemed like normal standard FPS...was I wrong. Its nothing revolutionary, however it was something new... Good game!