ProtonDB has announced that over 2,600 Windows games are now playable on Linux via Steam Play. These include games such as The Witcher 3, Dark Souls 3, Dishonored, and more. This increase in game compatibility ever since Steam Play launched with Proton last month is an indication of Valve's commitment to making Windows games easily accessible to Linux users.
https://www.notebookcheck.net/Steam-Play-and-ProtonDB-now-support-over-2-600-Windows-games-on-Linux.350646.0.html