Valve’s long effort to reduce Steam’s dependence on Windows began with SteamOS and Steam Machines, but became practical through the Steam Deck. Rather than persuade developers to make Linux versions of their games, Valve built Proton, which lets many Windows games run on Linux. Proton combines Wine with tools such as DXVK to translate Windows and DirectX functions, allowing developers to keep building for Windows while SteamOS handles compatibility. The approach helped make Linux gaming viable and gave Valve more control over its platform.
Steam Frame extends that strategy beyond operating systems: its Qualcomm Snapdragon chip uses Arm, not the x86 architecture common in gaming PCs. Valve’s FEX translates a game’s x86 CPU instructions into Arm instructions; Proton, Linux, and graphics drivers can run natively, so translation is largely limited to the game’s own CPU code. Valve says the overhead should be modest for games mainly limited by graphics performance, though speed still depends on the hardware. Code caching, potentially coordinated with Steam’s shader pre-caching, is intended to smooth performance. The broader ambition is a Steam library that can run across different operating systems, processor architectures, and eventually device types. Developers may not need to create separate builds: Valve aims to make compatibility its responsibility, turning hardware differences into performance considerations rather than barriers to playing.
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