Valve wants Steam to pour forth onto Linux users, and the company is starting with Ubuntu and a work-in-progress Left 4 Dead 2 port. The developer's efforts to mesh the digital distribution platform (and an accompanying library of Valve titles) with the open-source operating system were outlined on a post on the new Valve Linux Blog.

The project, which began in 2011, aims to bring a fully featured version of Steam to work with a functioning Ubuntu build of Left 4 Dead 2. Valve's 11-person Linux team wants to make the game run as well on Ubuntu as it does on Windows and plans to begin accommodating other distributions of Linux.

Steam on Linux would add yet another platform to Steam's base, which already includes presences on PC, Mac, PlayStation 3, Android, and iPhone.