Since I like to use technologies that makes it easy to target multiple platforms, I don't have to put an enormous amount of effort into "porting" a game to Mac or Linux. It's usually just a matter of changing the export settings on my compiler and doing a little troubleshooting when per-platform bugs crop up. I'd estimate we spent less than $1,000 worth of labor getting our game working on Linux. All in all, that's a small price to pay for what turns out to be a significant chunk of revenue.
Maybe Linux gaming will take off, maybe it won't. Maybe the Steambox will be a huge game-changer, and we'll reap the benefits of being a launch title, or maybe not.
Whatever the case, I see three things in the Linux gaming community: a passionate and under-served market, little competition, and plenty of room for growth. That's the perfect place for an indie to be.
