well WRPG's are really getting popular now i think all bioware games did over a million atleast, then there is elder scrolls, fable and a few other. And GT is a popular simulation game but most people will tell you it really isn't a real simulation no damage/lackluster ai/ online play. Real simulation was a very small cult genre on the PC. Hell the xbox brand was a messiah for us PC gamers it allowed the developers to sell their games across a much larger audience and its still continuing with most western developers now making games across both the PC and 360 and now even RTS is joining in.