Originally Posted by
PM_DMNKLR
Exactly. If it was something that was built into the game itself, it would affect every player, and I know numerous people who've never had an issue with either HL2 or any UE3 game. There are people who get that from playing racing games, some from FPS', some from 3PS like Halo, but it's still very uncommon and so much so that most people never notice it at all unless they see someone else affected by it, such as dizziness or vomiting. Those usually affected are also susceptible to doing so during long car rides, cruises, boat rides, etc. It's a form of equilibrium-effective motion sickness. Try taking some dramamine or something before playing, it should help a lot.