Proton-CachyOS
Proton-CachyOS: A free, open-source Proton build for Linux gamers seeking custom fixes and graphics options. Ranked #5 of 27 in Game Compatibility Layers by our editors (7.1/10); pricing: Free plan; best for linux Steam users wanting enhanced Proton support.
At a glance
- Editor score7.1 / 10
- PricingFree plan
- Best forLinux Steam users wanting enhanced Proton support
- Free planYes
- Paid fromNone
- Runtime modelTranslation + runtime
- Facts checked20 Sep 2026
Where it wins
- Supports Steam Play, umu-launcher, Lutris, and Heroic Games Launcher
- Adds DXVK, VKD3D, codecs, game workarounds, and runtime options
- Offers optional FSR, DLSS, Vulkan Reflex, and OptiScaler integrations
Where it doesn't
- Limited to Linux host systems
- Anti-cheat support is partial
- Advanced configuration relies on environment variables and launch options
Our verdict on Proton-CachyOS
Proton-CachyOS is a free, open-source compatibility tool for Linux gamers who want to run Windows-exclusive games through Steam Play and umu-launcher. Maintained by CachyOS, it builds on Proton and Wine while adding patches, experimental components, game-specific workarounds, codecs, and graphics integrations. Its focus is narrower than a general game launcher: it provides a custom Proton runtime for users who want features or fixes beyond those included in Valve’s Proton.
Its strongest case is ecosystem fit. Proton-CachyOS integrates with Steam and Steam Linux Runtime, while also supporting umu-launcher, Lutris, and Heroic Games Launcher. The graphics stack covers Direct3D 9, 10, and 11 through DXVK and Direct3D 12 through VKD3D. Optional Wayland support is available, and the project includes optional integrations for FSR, DLSS, Vulkan Reflex, and OptiScaler. These components give Linux users several ways to tailor compatibility and rendering behavior across supported launchers and environments.
The trade-off is that customization can require runtime configuration through environment variables and Steam launch options, with some components described as experimental. Anti-cheat support is partial, so compatibility may vary by game and configuration. Proton-CachyOS is a sensible choice for Linux Steam users who want a CachyOS-maintained Proton build, additional codecs, and game-specific workarounds in a free open-source package. Users who need a Windows host, complete anti-cheat coverage, or a less configurable compatibility path should consider another option.
Proton-CachyOS pricing
Proton-CachyOS fact sheet
| Free plan | Yes |
|---|---|
| Paid from | None |
| Host platforms | Linux |
| Runtime model | Translation + runtime |
| DirectX support | Directx 9/10/11 + 12 |
| Vulkan support | Yes |
| Steam integration | Yes |
| Anti-cheat status | Partial |
| Deployment | Desktop |
| Platforms | Linux |
| Support | Docs |
| Built for | Solo (editorial estimate) |
| Integrations | 4 integrations: Steam, umu-launcher, Lutris, Heroic Games Launcher |
| Pricing | Free plan |
| Website | github.com |
| Facts checked | 20 Sep 2026 |
Proton-CachyOS integrations
Proton-CachyOS lists 4 integrations on its own site.
- Steam
- umu-launcher
- Lutris
- Heroic Games Launcher
Alternatives to Proton-CachyOS
- CrossOverA mature paid compatibility layer with broad Windows app support for Mac and Linux.9.2
- WineA mature, free compatibility layer for running many Windows apps across Linux and macOS.8.2
- OpenNativeA flexible Android game container with broad runtime controls and unsupported anti-cheat.7.7
See all Proton-CachyOS alternatives →
Proton-CachyOS vs the competition
- Proton-CachyOS vs CrossOver
- Proton-CachyOS vs Wine
- Proton-CachyOS vs OpenNative
- Proton-CachyOS vs Bannerlator
- Proton-CachyOS vs Winlator
- Proton-CachyOS vs PlayOnLinux
Compare Proton-CachyOS with any tool side by side →
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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
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