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A free and open-source application called FX Steam Launcher allows users to boot the ARM version of SteamOS directly on an Apple Silicon Mac. The software utilizes a virtual machine and compatibility layers to let users play games that are otherwise unplayable on macOS.
System Requirements and Installation
The application requires a Mac with an Apple Silicon processor running macOS 15 or newer, as Intel Macs are not supported. To begin, users download the application, mount the DMG file, and drag the app into their Applications folder. Upon the first launch, a pop-up prompts the user to download and install SteamOS inside a virtual machine.
Users click Create New Disk and configure options such as the hard drive size, with the default set at 64 GB. After choosing a drive location and setting a password, the application downloads and installs SteamOS. During this setup process, users can pair a game controller, such as an Xbox, DualSense, DualShock, or Nintendo Pro Controller, via Bluetooth in macOS System Settings.
Using SteamOS and Playing Games
Once the login screen appears, users enter their Steam credentials to access their library. The virtual machine functions similarly to an actual Steam Deck, categorizing the library into games verified to work on SteamOS and those that might work. Many titles start running immediately with full gamepad support.
Running SteamOS in a virtual machine on a Mac has certain limitations, and some games require troubleshooting. Users may need to adjust graphics settings, apply community patches, or search online for solutions used by Steam Deck owners experiencing similar issues. Additionally, processing power depends on the specific Mac model, such as a MacBook Air, and virtual machines do not access a computer’s full capabilities.
Advanced Features and Sideloading
Users can also install non-Steam games by sideloading them through the SteamOS Desktop Mode found in the Power sidebar. This Linux-based desktop provides a web browser for downloading games, placing them into folders, and directing Steam to run them. Power users can further customize the software by opening FX Steam Launcher settings from the menu bar or using the Command-comma keyboard shortcut to adjust resolution, configure audio, and submit game statistics.
Players can connect their MacBook to a television using an HDMI cable and a gamepad to play games from a couch. FX Steam Launcher provides an alternative for Mac users facing software restrictions, such as Apple’s previous discontinuation of 32-bit game support and upcoming changes to Intel Mac application compatibility.
