tech
December 8, 2025
Steam Machine today, Steam Phones tomorrow
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TL;DR
- Valve is the primary funder behind open-source technologies enabling Windows games to run on Arm processors.
- The Fex emulator is key to translating x86 game code to run on Arm architecture.
- Proton, a compatibility layer for Windows games on Linux, is also heavily influenced by Valve's funding.
- This effort aims to reduce barriers for gamers and developers by expanding game compatibility to Arm devices.
- Valve's goal is to allow game developers to focus on creating games rather than porting them to different architectures.
- The technology could enable a variety of Arm-based gaming devices, including laptops, handhelds, and potentially desktops.
- SteamOS on Arm utilizes the same core components as its x86 counterpart.
- The Steam Frame headset uses a similar compatibility layer for Android games on Arm.
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