Valve released Proton 11.0-2 on August 21, a targeted point release aimed largely at cleaning up compatibility regressions introduced when Proton rebased onto Wine 11.0 five weeks earlier.

The fixes people were waiting for

Three games account for most of the attention:

• Helldivers 2 was not launching after a recent game update
• Diablo IV had become unplayable after a recent game update
• Marvel Rivals was crashing after a recent game update

There is a pattern in that list worth naming. All three broke after the game updated, not after Proton did. This is the structural reality of the compatibility layer approach: every patch a developer ships is a chance to use a Windows API path Proton handles imperfectly, and Valve is permanently responding to changes it does not control.

That Proton works as well as it does under that constraint is genuinely impressive. It also explains why “is this game playable on Linux” is a question with a timestamp attached rather than a permanent answer.

Nine more playable games

The release adds nine titles to the playable list: AsteroidsHD, Heroes of the Three Kingdoms 7, Konkan Coast Pirate Solutions, Otherworld Legends, Plain Sight, Portal Worlds, SMILE GAME BUILDER, Tetrageddon Games, and Warhammer: Dark Omen (Classic).

Component updates

Core components moved forward alongside the game-specific work, including vkd3d. Vkd3d 2.1 landed separately this week with expanded HLSL support, and Wine 11.16 added VA-API hardware video decoding, so the whole stack beneath Proton had an active week.

Getting it

Proton updates through Steam automatically. To use a specific version, right-click a game, open Properties, then Compatibility, and pick the Proton version.

If a game broke recently and this release does not fix it, it is worth checking whether an older Proton version still works before assuming the game is unplayable. Pinning a known-good runner per title is a normal and underused strategy.