According to Valve, they managed to run pretty much all x86 games (so far) on their new ARM-based PCs thanks to this FOSS project:

github.com/FEX-Emu/FEX

This runs together with Proton to seamlessly transcode Windows x86 games for Steam OS on ARM. FOSS is THAT cool!

#foss #valve

GitHub - FEX-Emu/FEX: A fast usermode x86 and x86-64 emulator for Arm64 Linux

A fast usermode x86 and x86-64 emulator for Arm64 Linux - FEX-Emu/FEX

^GitHub