We can game on Linux too.
Gaming with Unreal Tournament 2004 on Debian GNU/Linux showing that you can play games on the free operating system as well as on Windows. UT 2004 has huge levels reminiscent of Tribes and sniping other players in those Duke3D styled flying machines and running on the ground is heaps of fun.
There is also Quake I, II, II and IV to enjoy as well. Sure there is the Xbox 360 and Playstation 3, but I prefer a PC. And Starsiege Tribes is an awesome game to play. Gentoo works the best for setting up games and the only problems I have had was when I did emerge world and it did a kernel update and I was not aware of that and I had to re-install the NVidia drivers. But that is a minor inconvenience and it is part of using Linux, I could not get the Gentoo NVidia packages to install. But Gentoo has the Linux version of Duke3D, which rocks and it is of course here now not like the Vapourware that is Duke Nukem Forever. That game has gone through many engine changes and still is not ready for release, maybe they should just release all of the resources and source code for the community to finish and make a cool game, a collaborative effort would be good as long as they did not fork() the game and end up bitching and fighting pointlessly like the fight between OpenOffice.org and LibreOffice. That is very embarrassing for the open source community, who can release good software but also shoot themselves in the foot.
Just release one good Office suite and make it the best one, do not fork() stuff and fight and embarrass yourselves in front of Microsoft who are laughing at you.