Umamusume: Pretty Derby joins the growing list of Proton-supported Windows titles, signaling improved anti-cheat integration for Linux-based handheld gaming
A Win for Steam Deck and Linux Gaming Fans
One of the most persistent frustrations for Steam Deck owners has been the incompatibility of popular Windows games using kernel-level anti-cheat software. Titles like Fortnite, Apex Legends, and EA Sports FC remain locked out of reach. However, new developments are pointing to a turning point for Linux gaming—with Umamusume: Pretty Derby emerging as the latest surprise success.
Umamusume: Pretty Derby Now Works on Steam Deck
The Japanese-developed title, Umamusume: Pretty Derby, which combines anime jockey simulation with horse-racing strategy, has been confirmed to run smoothly on the Steam Deck despite using CrackProof anti-cheat—a system once thought incompatible with Proton or Linux.
- According to GamingOnLinux, the game runs without significant issues
- It is currently listed as Steam Deck Playable, with only minor UI quirks preventing full Verified status
- It also runs well on desktop Linux distributions like Kubuntu 25.04
This is particularly notable because CrackProof is not typically known for Linux compatibility—suggesting developers and middleware vendors are quietly making progress.
Proton 9.0-4: A Quiet Hero
Released in December 2024, Proton 9.0-4 has significantly boosted compatibility for Windows-only games running on SteamOS and Linux.
- More games now bypass traditional anti-cheat compatibility hurdles
- System-level support and performance have also improved across Proton versions
- Valve’s relentless updates to Proton and SteamOS continue to broaden the library of Steam Deck-compatible titles
While anti-cheat integration still isn’t seamless for all games, Proton’s improvements show that the barriers are no longer insurmountable.
Why Anti-Cheat Was a Major Barrier
Many popular online multiplayer games use kernel-level anti-cheat, which runs with deep system access—posing major compatibility issues for Linux environments like SteamOS.
- Developers often cite security risks when explaining the lack of support
- Some critics argue that publishers haven’t made Linux compatibility a priority due to its small market share
- The rise of the Steam Deck, however, is changing that perception
Handheld Market Is Pushing Linux Forward
Valve’s Steam Deck has reinvigorated interest in Linux gaming, and other companies are following suit. Devices like the Lenovo Legion Go S and future handhelds are considering SteamOS as a viable platform, not just Windows.
- Steam Deck adoption has outpaced expectations, validating Linux as a gaming OS
- With rising demand for efficient, portable, and secure gaming environments, Linux’s appeal is growing
Even if Valve doesn’t launch a new handheld soon, its ecosystem is driving change across the industry.
Final Thoughts
The successful operation of Umamusume: Pretty Derby on the Steam Deck signals that kernel-level anti-cheat compatibility is finally progressing on Linux. With Proton maturing and Linux-friendly handhelds on the rise, the long-promised future of open-source gaming on modern hardware is no longer wishful thinking—it’s here.
