Steam, Valve's popular portal for PC games, is now available on Linux. The beta client is currently available for Ubuntu 12.04, with more OS variants to be supported in the future. Valve's Frank Crockett explained that "an overwhelming majority of beta applicants have reported they're running the Ubuntu distro of Linux," but Valve plans on supporting additional "popular distros," prioritized by user feedback.
The beta client will become available to "a widening group of users," but the first round is currently reserved for those that have already responded to participate. "Once the team has seen a solid level of stability and performance across a variety of systems, the Steam for Linux client will become available to all users of Steam."
To coincide with the launch of Steam for Linux, Valve has released Team Fortress 2 for the platform. Valve says that approximately two dozen other games are also available to play, but the list is currently inaccessible.