It would be interesting and important to also get numbers on what percentage of gamers on each platform get their games from Steam or associate their games with Steam. Mac may only be 3% of Steam users and Linux is rapidly catching up, but it needs to be determined how well that reflects the size of the overall gaming market on each platform. For example, I'd expect the Mac App Store is a significant source of games on that platform, possibly even larger than Steam.
No announcement yet.
Linux Gamers Make Up ~2% Of Valve's Steam Users