Have you seen how tight the gaming market has become? You need a niche to get any attention. Coming out with a truly cross platform game that has Linux as a first class citizen would buy tremendous free publicity. It would be on the front page here a lone, a site with an enormous audience at minimum once a quarter. It would appear in countless tech related subreddits, twitter hacker-verse would take off. The “maker culture” would adopt it as its son or daughter.
Sounds like a tremendous opportunity.
We are not representative of the culture but we are hackers and developers and eventually one spark is all you need to start a fire. I have the perception that gamers are dying to get off of Windows, but I could be wrong, I certainly was when I was a gamer.