steamac
Valve's official ARM64 SteamOS in a lightweight VM on Apple Silicon: libkrun + Venus + MoltenVK, controllers, CoreAudio sound
steamac launched on 4 October 2026. It ranked #93 on Daily Launch on 24 October 2026 with a Launch Score of 17, from +39 stars on 24 Oct on GitHub. It was new in the ranking that day.
What is steamac?
On macOS 15 (Sequoia), Valve's actual SteamOS for Steam Frame runs in a lightweight VM on Hypervisor.framework (libkrun) with GPU acceleration via Venus. Vulkan on Metal — MoltenVK from the UTM fork (geometry shaders, robustness2) + VKEXTdepthclipenable (PR #2712) + our fixes, by default. KosmicKrisp (Mesa's Vulkan driver on Metal 4) is an experimental alternative on macOS 26+ (see “Vulkan driver”).
From its README on GitHub
steamac is a repo by fxgl on GitHub. It is written in Swift and released under the Apache-2.0 license.
How to get steamac
Get it from its repository on GitHub.
Launch timeline
Launch Score, last 7 days
Ranked on one day so far: 17 of 100 on 24 October.