Last updated: Wednesday 27 May 2026 @ 00:15:58

Run the Game (Proton)

Install s&box normally via Steam
Right click s&box in your library > Properties… > Compatibility > Check “Force the use of a specific Steam Play compatibility tool” > Select “Proton 11.0 (Beta)” or newer

[Screenshot of s&box’s Steam compatibility window with Proton 11 selected]

Run