You may have heard that Valve, one of the major videogames companies, is going to release its own operating system: SteamOs. It is based on Debian: basically, it's just a Debian GNU/Linux distro with GNOME, that comes with Steam preinstalled and ready for use. If you want to try it, I have prepared a VDI image for Virtualbox (you will need to create a Debian VM, with 3D enabled):
www.zorbaproject.org/steamos/Steamos-vdi.zip
