Proton
Compatibility tool for Steam Play based on Wine and other components
...It uses Wine to facilitate this. Most users will prefer to use Proton provided by the Steam client itself. The source code is provided to enable advanced users the ability to alter Proton. For example, some users may wish to use a different version of Wine with a particular title. As the new Steam Play is still in Beta, it is recommended that you opt into the Steam Client Beta for the latest features and fixes. Proton works best with the latest graphics drivers. For some cutting edge games and graphical features, you may need drivers newer than what your distribution ships. ...