Valve's Alien Swarm Game For Linux?
While the best cards have not yet been dealt, for those hoping to see Valve's "Alien Swarm" game supported on Linux upon the Steam / Source Engine Linux release, you may be in luck. Windowing code within the Alien Swarm SDK is signalling that there may be support for this game coming to Linux.
Within one of the header files for the Alien Swarm SDK are Linux references to the windowing code (read: not for the server). A copy of the portion of the source header file is available from the Steam Forums.