Valve has rolled out a fresh Proton update in beta, and it’s a big deal for anyone interested in running PC games outside the usual Windows and x86 hardware. Proton 11.0-Beta 1 adds ARM64 support, opening the door for Steam and Proton-powered compatibility on a wider range of ARM-based devices.
That didn’t take long to turn into something exciting: a modder known as @aagaming.me on BlueSky has already used the new beta to get Steam running on the ARM-based Nintendo Switch (first-generation). While getting Windows games to run on the original Switch isn’t a brand-new idea in the modding scene, this beta could simplify the process by bringing more official groundwork to ARM64 environments. In early testing, the Steam Linux ARM64 beta client reportedly runs smoothly on the aging handheld hardware, even though the modder hasn’t yet demonstrated actual Windows game performance through Proton on the Switch.
There is one important limitation to keep expectations in check. Proton 11.0-Beta 1 includes FEX-2604 support for ARM64EC builds, but the first-gen Nintendo Switch kernel is reportedly too old to support FEX properly. In practical terms, that means real progress for gaming performance and compatibility on the Switch may depend on using a newer, mainline kernel, or waiting for additional community and software improvements that make the full stack work reliably.
The impact of Proton’s ARM64 support goes beyond the Nintendo Switch modding scene. Newer ARM-based gaming handhelds are positioned to benefit as well. Devices like the Retroid Pocket 6 could potentially use this Proton beta to improve compatibility and performance when trying to run a broader library of PC games. According to @aagaming.me, a “working copy of proton ARM + Steamrt ARM” is available for users to drop into Compatibilitytools.d, allowing games to run through the Steam beta client using these tools. If the setup proves stable, it could become a more appealing approach compared with alternative methods people currently use to launch and manage games on Linux-based handhelds.
Valve’s primary motivation for pushing Proton ARM64 forward appears to be upcoming ARM gaming hardware. The company is positioning this update around the Steam Frame, an ARM-based gaming headset powered by the Snapdragon 8 Gen 3. With compatibility layers like Proton, hardware like this can potentially run a wider range of games even without traditional PC components, which makes Proton’s ARM progress particularly important for the future of portable and standalone gaming devices.
Alongside the ARM64 changes, the Proton 11.0-Beta 1 release also updates game compatibility status, marking several titles as playable, including Resident Evil 2, Resident Evil, and Warhammer: Vermintide 2. The beta also includes a range of bug fixes, reflecting the ongoing push to make Proton more stable and capable across different systems.
For gamers and tinkerers, this is the kind of update that can shift what’s possible. Whether you’re watching for better support on ARM handhelds, experimenting with a first-gen Nintendo Switch, or curious about the next wave of standalone gaming hardware, Proton 11.0-Beta 1 is a clear sign Valve is taking ARM seriously—and that could reshape how and where PC games get played.
