FEX-Emu is an emulation layer that allows you to run x86 and x86-64 binaries (like games and apps) on an AArch64 Linux host, similar to qemu-user and box86/box64. Instead of using full disk images, FEX-Emu uses rootfs overlay + forwarding GL processing to the host to achieve better performance in emulated software.
Read the full article here: https://www.gamingonlinux.com/2024/10/fex-emu-version-2410-out-bringing-some-important-fixes-for-gaming-on-aarch64