Overview
- Valve engineer Pierre-Loup Griffais said the company initiated the open-source FEX project and has financed it from the beginning.
- FEX pairs with Valve-backed Proton to translate x86 Windows games for Arm hardware, and it already underpins leading Android-based PC emulators.
- Valve’s first Arm device, the Steam Frame headset, will bundle FEX to run Steam games on-device and is slated for 2026.
- FEX lead Ryan Houdek marked the project’s seventh anniversary by thanking Valve for being involved from the start.
- Griffais said Valve began exploring Arm in 2016 and emphasized a current focus on living room, handheld, and desktop experiences, leaving broader mobile plans unclear.