:bulletred: This article is slightly out-of-date: Steam for Linux is now available in Ubuntu Software Center, for Ubuntu 12.10, 12.04, 11.04 and 10.04. This also means that Steam for Linux is no longer considered beta software :bulletred:
This is some exciting news: Valve has just announced (20 Dec 2012) that...:
"...Steam for Linux is now available in Beta to all users of Steam. With a growing catalog of Linux-supported games (including Serious Sam 3: BFE, Team Fortress 2, Killing Floor and others) and an active Steam for linux community group, the timing's right to jump in and share your feedback."
EDIT: Counter-Strike: Source and Counte