That’s curious, because Linux support for Alien: Isolation has never been announced, and if you visit the Alien Isolation listing on Steam, it only lists specification requirements for Windows PCs. AMD has since scrubbed all mention of the game from the release notes, but you can still see them in a Google cache of the page.
The story behind the story: Assuming Alien: Isolation indeed hits Linux, it’ll be the latest in a long and growing list of top-tier games that now call Linux home. Why all the open-source love all of a sudden? Chalk it up to the fall release of Valve’s Steam Machines, which run an operating system based on the Linux kernel.