最近,Valve Software has ported their Steam game client to Linux. In Valve's most recent title, Left 4 Dead, there are shared Linux libraries shipping alongside this Windows game client.
In particular, one of these files was even named steamclient_linux.so. This is in the Windows demo client -- we're not referring to the Linux dedicated server-only version. Left 4 Dead is a first person shooter developed by Turtle Rock Studios and then acquired by Valve and is written around the Source Engine. Left 4 Dead brings several new features to the Source Engine such as post-processing effects, rendering and AI improvements, and dynamic lighting and shadowing improvements. The Windows client was released earlier this month and a playable demo a few days before the release. The retail game is distributed via Valve's Steam client, but the demo is no longer available through the Steam network.