Linux users will now be able to play multiple Windows games on Steam thanks to a new beta version of Steam Play released yesterday.
For the new beta, Valve has helped design and finance a new modified distribution of Wine, an existing open source compatibility project. The modified version is called Proton, which means that Windows games without the current Linux version can be installed and played through the Linux Steam client, "complete with Steamworks and OpenVR support."
In Proton, DirectX 1
Beta will initially initially support 27 games, including Into The Breach, Doom and STALKER: Shadow of Ternobyl, but more games will be added "in the near future". You can also use an override switch on the Linux Steam client to play non-whitelisted games (the head of Steam Play options), but Valve recommends it only for "enthusiastic users." It may not work for everything, but games with "complex DRM or anti-cheat systems" can never run on Steam Play, "said Valve.
The 27 supported games will not be offered for purchase or markup based on Linux "during the first beta, which indicates that you already have to own these games on Steam to participate (it may be that they are free of charge Linux Steam client for a limited time, but I doubt it – I've reached Valve to clarify.)
You can find out more about the beta, the complete list of supported games, and how Proton works in the damp .
And if you're curious, it's a guide to playing Windows games in Linux.