Motion sickness most typically results from situations where a person's inner ear is thrown off balance by physical motion; the internal fluids move around, causing the body to lose its sense of foundation. This is what usually causes the nausea and vertigo that some people experience on boats and airplanes where the basic foundation is constantly in motion (research shows that approximately 80% of people are susceptible to some form of motion sickness). This is not, however, what is happening when people become sick while playing video games.

Simulator sickness, by comparison, results from purely virtual circumstances. There's not much motion involved in playing Quake (ducking and bobbing, perhaps, but not much else), so the sickness people feel is coming purely from the screen and speakers – their virtual visual and aural environment – as opposed to their real environment. However, simulator sickness is intrinsically related to motion sickness in terms of symptoms, and studies have shown that people who are prone to getting motion sickness are also more likely to experience simulator sickness (and vice versa).

#2They had to figure out who in the MythBusters crew was susceptible to seasickness. Adam was a sure bet because of previous seasickness during the Jaws Special. Sure enough, Adam got quesy within 3 and half minutes on the chair. After a half an hour in the chair, Jamie was still fine. Kari and Tory were both fine as well. Grant became the final test subject. He lasted longer than Adam, but he got sick as well.

Remedy Testing

Homoepathic tongue tingler. They used a unnamed spray that you squirt under the tongue as often as needed. Grant was sick within 10 minutes and vomited some small chunks. Adam was sick within 4 minutes.
Wrist straps: They wore little gray wristbands that are 'Barry Manilow's choice.' Adam was sick within 90 seconds. Grant got sick as well. They've gotten pretty quick with bringing a bucket to Grant.
Ginger pills: It worked! Adam and Grant were both fine.
Small shocks on the P6 Accupunture point (on the wrist):Z Both Adam and Grant got sick.
Placebo: They told Grant and Adam they were getting an over-the-counter pharmaceutical remedy, but they actually gave them vitamins. Adam's reponse: "I hate this [bleeping] chair" after three and a half minutes. Grant: "This is among the most effective, if not the most effective."
Over-the-counter pharmaceutical drug: Worked on Adam and Grant, but it made them both a little loopy.

Only thing that worked without any side effects was the ginger pill.

Ginger pills: plausible
(source) [kwc.org]

I would like to know if this works out for you. I get sick within minutes of playing any game that moves.