Steam for Linux is live and celebrating its own existence with some cartoon cake and a week-long, half-off sale on Linux games. The sale covers Steam’s entire Linux catalog, running now through February 21 at 10 a.m. PST.
Some notable games include Amnesia: The Dark Descent, FTL: Faster Than Light, Red Orchestra: Ostfront 41-45, Postal 2 Complete, Killing Floor, Team Fortress 2, Dungeons of Dredmor, Trine 2, Counter-Strike: Source, Sword and Sworcery, Waveform, World of Goo, Frozen Synapse, Half-Life, Splice, and many more, all for half off.
As a bonus, play TF2 in Linux through the end of February and get a free in-game Tux (the Linux mascot) item.