Valve has released Proton 11.0-2, the latest mainline stable update for its compatibility layer designed to run Windows games on Linux, SteamOS, Steam Deck, and Steam Machine. The update brings a extensive changelog focused on new playable titles, fixed regressions, and underlying component updates.
Quick Facts
- Platform: Linux, SteamOS, Steam Deck, Steam Machine
- Release Date: August 21, 2026
- Key Components Updated: Wine Mono 11.2.0, FEX-2607, vkd3d-proton v3.0a-252, dxvk v2.7.1, vkd3d 2.0, and dxvk-nvapi v0.9.2
Newly Playable Titles
Several games have graduated to playable status in this stable update:
- AsteroidsHD
- Heroes of the Three Kingdoms 7
- Konkan Coast Pirate Solutions
- Otherworld Legends (战魂铭人)
- Plain Sight
- Portal Worlds
- SMILE GAME BUILDER
- Tetrageddon Games
- Warhammer: Dark Omen (Classic)
Key Fixes and Regression Resolutions
The Proton 11.0-2 changelog addresses numerous specific performance and functional issues reported by players:
- CEG-using games no longer take extra time to start.
- Command & Conquer titles (Generals, Renegade, Zero Hour, Red Alert 3, Kane's Wrath, and Tiberium Wars) detect custom Steam Workshop levels again.
- Terraria performance is restored to match or exceed Proton 10.
- Arma 3 workshop mods no longer update unnecessarily on each launch.
- Source SDK 2007 and 2013 Singleplayer correctly locate gameinfo.txt.
- Natural Selection 2 server connections are restored.
- The Talos Principle and The Talos Principle VR no longer show an incorrect login window on launch.
- Memory leaks have been fixed in The King of Fighters XIII Global Match and HITMAN World of Assassination.
- Forza Horizon 4, 5, and 6 black screen issues on recent SteamOS versions have been resolved, alongside a fix for Forza Horizon 6 auto-closing after suspend/resume.
Players who already have Proton 11 installed will receive the update automatically through Steam Downloads for any tagged titles.