While it doesn't compare to Windows, Linux gaming is getting better. Perhaps this is due in part to a growing dissatisfaction with Windows or maybe it is because Linux is getting easier to install but Linux is certainly growing by leaps and bounds.
As many of you know, I love Peppermint Linux (http://peppermintos.com/). I plan to do a quick Youtube video of Steam (http://store.steampowered.com/) being installed on Peppermint 6. I may cross-post on Gnostalgia (gnostalgia.wordpress.com) where I talk about Linux a little more.
Power to the Penguin!