Steam Machines are still missing in action, but the library of SteamOS titles continues to grow. This time, it's the Metro Redux bundle that has become available for Valve's operating system—and vanilla Linux, too.
According to the press release quoted by Joystiq, the port uses OpenGL 4.0 and "rivals the DX11 version for Windows in terms of graphical fidelity and performance." A 64-bit copy of Ubuntu 12.04 or Steam OS 14.04 is required, and thanks to Steam Play, you need only purchase the bundle once to play it on all supported platforms, including Windows.
To mark the occasion, the Metro Redux bundle is 50% off on Steam right now. The bundle includes Metro 2033 Redux and Metro: Last Light Redux and is $24.98 after the discount. Don't wait too long, though: the deal expires in about three hours.
Metro Redux's cross-platform journey isn't done yet. 4A Games and Deep Silver say a Mac version is in the works and will be released "later this month."