Valve has announced a new version of Steam Play with support for Windows-only titles

In 2010, we announced Steam Play: a way for Steam users to access Windows, Mac and Linux versions of Steam games with a single purchase. More than 3000 of the games that have been added to Steam after that point have included Linux support, with more titles being added every day. Since then, we've continued to look for ways to make more titles easily accessible to Linux users.

So, two years ago, we started an effort to improve the quality and performance of Windows compatibility solutions for Steam games. A lot of our work has been in the form of supporting Wine[www.winehq.org] and other existing compatibility projects. We have also been integrating these tools into the Steam client to provide the same simple plug-and-play experience offered by regular Linux games.

Our goal for this work is to let Linux Steam users enjoy easy access to a larger back catalog. We think it will also allow future developers to easily leverage their work from other platforms to target Linux. This would give them the option of focusing on areas that would make a meaningful experience difference for all users instead, such as supporting Vulkan[www.khronos.org].

As a result of this work, today we are releasing the Beta of a new and improved version of Steam Play to all Linux users! It includes a modified distribution of Wine, called Proton, to provide compatibility with Windows game titles. Here are some of the improvements it brings to the table:
Windows games with no Linux version currently available can now be installed and run directly from the Linux Steam client, complete with native Steamworks and OpenVR support.
DirectX 11 and 12 implementations are now based on Vulkan, resulting in improved game compatibility and reduced performance impact.
Fullscreen support has been improved: fullscreen games will be seamlessly stretched to the desired display without interfering with the native monitor resolution or requiring the use of a virtual desktop.
Improved game controller support: games will automatically recognize all controllers supported by Steam. Expect more out-of-the-box controller compatibility than even the original version of the game.
Performance for multi-threaded games has been greatly improved compared to vanilla Wine.

This goes hand-in-hand with an ongoing testing effort of the entire Steam catalog, in order to identify games that currently work great in this compatibility environment, and find and address issues for the ones that don't. The initial set of supported games that we are enabling with this initial Beta release is as follows:

Beat Saber
Bejeweled 2 Deluxe
Doki Doki Literature Club!
DOOM
DOOM II: Hell on Earth
DOOM VFR
Fallout Shelter
FATE
FINAL FANTASY VI
Geometry Dash
Google Earth VR
Into The Breach
Magic: The Gathering - Duels of the Planeswalkers 2012
Magic: The Gathering - Duels of the Planeswalkers 2013
Mount & Blade
Mount & Blade: With Fire & Sword
NieR: Automata
PAYDAY: The Heist
QUAKE
S.T.A.L.K.E.R.: Shadow of Chernobyl
Star Wars: Battlefront 2
Tekken 7
The Last Remnant
Tropico 4
Ultimate Doom
Warhammer 40,000: Dawn of War - Dark Crusade
Warhammer 40,000: Dawn of War - Soulstorm

  Linux Steam Client now with Windows Games support