The Steam pages for Valve classics Half-Life and Counter-Strike have been updated with small, penguin-shaped icons. No, they aren't unsubtle emblems of a secret flightless waterfowl cabal, but they do signify newly added Linux support for both FPS games as part of Valve's compatibility push.
Valve recently released a Linux version of Steam and has since been retrofitting older games to run on the open-source OS. It's a neat affirmation of the company's goal to broaden the choices for PC gamers, but not everyone is convinced—id Software's John Carmack believes Linux is a useful tool but bad for business .