FEX-Emu
fex-emu.com
Spec sheet
- Purpose
- FEX runs x86 applications on ARM64 Linux devices and supports both 32-bit and 64-bit binaries.Read 7 Oct 2026 · fex-emu.com
- License
- The FEX repository states that it is licensed under the MIT License.Read 7 Oct 2026 · github.com
- Android limitation
- FEX-Emu targets Linux on Linux devices; its FAQ says Android is not a target and will not be supported.Read 7 Oct 2026 · wiki.fex-emu.com
- ARM64 setup requirement
- On AArch64 hosts, running applications requires an x86-64 root filesystem.Read 7 Oct 2026 · wiki.fex-emu.com
- Code cache
- An experimental code cache is intended to help minimize in-game stuttering.Read 7 Oct 2026 · fex-emu.com
- Configuration
- FEX provides per-application settings and a FEXConfig graphical interface for changing configuration.Read 7 Oct 2026 · fex-emu.com
- Configuration GUI
- FEX provides a GUI called FEXConfig for exploring and changing settings.Read 7 Oct 2026 · fex-emu.com
- Graphics forwarding
- FEX can forward API calls for libraries such as OpenGL and Vulkan to host system libraries to reduce emulation overhead.Read 7 Oct 2026 · fex-emu.com
- Hardware requirements
- FEX requires ARMv8.0-a or newer hardware with FEAT_FP and FEAT_CRC32 extensions.Read 7 Oct 2026 · github.com
- Instruction support
- Its binary recompiler supports modern x86 and x86-64 instruction extensions, including AVX and AVX2.Read 7 Oct 2026 · fex-emu.com
- Known limitation
- The project says split-lock emulation is currently best-effort and can tear data in some cases.Read 7 Oct 2026 · fex-emu.com
- Per-app settings
- A per-app configuration system lets users adjust performance settings for each game.Read 7 Oct 2026 · fex-emu.com
- Project history
- The project’s anniversary post says its first prototype commit was made on November 28, 2018.Read 7 Oct 2026 · fex-emu.com
- Recompiler
- FEX has a binary recompiler supporting modern x86 and x86-64 instruction extensions including AVX and AVX2.Read 7 Oct 2026 · fex-emu.com
- RootFS requirement
- An x86-64 RootFS is required; the project provides FEXRootFSFetcher for downloading images for many distributions.Read 7 Oct 2026 · github.com
- Security feature
- The system call translation layer implements features including seccomp.Read 7 Oct 2026 · fex-emu.com
- Support channels
- The project homepage links to GitHub and Discord.Read 7 Oct 2026 · fex-emu.com
- Tested distributions
- The project lists Arch Linux, Fedora Linux, openSUSE, and Ubuntu versions 22.04, 24.04, 24.10, and 25.04 as tested distributions.Read 7 Oct 2026 · github.com
- VR limitation
- The FEX wiki says SteamVR is not currently functional under FEX.Read 7 Oct 2026 · wiki.fex-emu.com
- Windows games
- FEX can be used alongside Wine or Proton to play Windows games.Read 7 Oct 2026 · fex-emu.com
- Wine integration
- FEX has a modular core that can serve as a WoW64 or ARM64EC backend in Wine.Read 7 Oct 2026 · fex-emu.com
Where Specifiction places it
- Game Compatibility Layers#16 of 277.3
