Yeah I know all about PC sales. And I'm not exactly your average consumer. I was at E3 a couple weeks ago and I test games professionally. So my knowing about a particular game doesn't mean it's well known.
I forget where I read it, but Stackpole (the author of the origional X-Wing novels) said he got his inspiration for them from the games. Actually, it might have been something as simple as the forward if they have one. And many of the training missions and stuff they go through are missions from the game.