What is Proton?
Proton is a tool developed by Valve in collaboration with CodeWeavers that allows running Windows games and applications on Linux systems via an enhanced version of Wine. Since its launch in 2018, it has become the fundamental pillar for Linux users to enjoy a game library virtually without barriers.
How does Proton work under the hood?
Proton combines several components: a customized version of Wine that translates Windows API calls into Linux-compatible calls, DXVK to translate Direct3D 9/10/11 to Vulkan, and VKD3D for Direct3D 12. It also includes components such as esync and fsync to improve thread synchronization, and a series of patches that fix specific errors in certain games.
Main advantages of using Proton
- Broad compatibility: more than 80 % of Steam titles work without additional configuration.
- Near-native performance: thanks to DXVK and Vulkan, many games reach or surpass the FPS obtained on Windows.
- Steam integration: it activates automatically when launching a game marked as compatible.
- Frequent updates: Valve and the community constantly improve the compatibility layer.
Limitations and considerations
- Some games with invasive anti-cheat (such as certain titles of BattleEye or Easy Anti‑Cheat) may not work.
- Games that depend on very specific Windows technologies, such as certain DRM or middleware, may present problems.
- Manual configuration may be necessary to adjust environment variables or use experimental versions of Proton.
Installation and basic usage
If you use Steam on Linux, Proton is already included. You only need to:
- Open Steam and go to Settings → Steam Play.
- Check the option «Enable Steam Play for supported titles» and, if you wish, «Enable Steam Play for all titles».
- Choose the Proton version you prefer (stable or experimental).
- Restart Steam and start playing.
For advanced users, it is possible to install Proton manually from Valve’s GitHub repository and use it with Lutris or directly from the command line.
ProtonDB: the community that improves the experience
ProtonDB is a website where users share their gaming experiences with different Proton versions. Each entry includes a rating (from «Borked» to «Platinum»), configuration notes, and links to launch scripts. Checking ProtonDB before buying a game saves you time and frustration.
The future of Proton in the Linux ecosystem
With the growth of Steam Deck, which runs an Arch Linux-based operating system and uses Proton as its main compatibility layer, Valve’s investment in this technology continues to increase. Improvements in DirectX 12 support, greater integration with Wayland, and optimizations for recent graphics hardware are expected. All this points to Linux consolidating as an increasingly viable gaming platform.
Conclusion
Proton has transformed the way Linux users access Windows games, eliminating many historical barriers. Although challenges remain, the combination of active development, a committed community, and the backing of major players like Valve makes the future promising. If you haven’t tried it yet, now is the time to give it a chance and expand your game library without leaving your favorite distribution.