Drag the downloaded fix file into the Terminal window and press .
To play GMod natively on macOS (including Intel and Apple Silicon like M1/M2/M3), you must use a specific 64-bit beta branch and a community-made patch. 1. Enable the 64-Bit Beta Branch
: Steam will automatically begin a small download to update your game files to the 64-bit version. 2. Apply the GMod CEF Codec Fix
Once the patch is applied, you can launch Garry's Mod. On Apple Silicon Macs, the game will run via with surprisingly high performance, often maintaining 60+ FPS even with numerous addons. Requirement Minimum Spec OS macOS 10.15 (Catalina) or later (required for 64-bit) Processor Intel Core 2 Duo or Apple Silicon (M1/M2/M3) RAM 4 GB (8 GB recommended) Storage 5 GB for base game; 20+ GB recommended for addons Save 50% on Garry's Mod on Steam
: Go to your Steam Library and right-click Garry's Mod . Open Properties : Select Properties > Betas .
Before downloading the patch, you must switch your game version within the Steam Client :
: Double-click the file to open it. It will automatically patch your GMod installation files to support the modern macOS architecture. 3. Launching the Game
: In the "Beta Participation" dropdown, select x86-64 - Chromium + 64-bit Binaries .
Drag the downloaded fix file into the Terminal window and press .
To play GMod natively on macOS (including Intel and Apple Silicon like M1/M2/M3), you must use a specific 64-bit beta branch and a community-made patch. 1. Enable the 64-Bit Beta Branch
: Steam will automatically begin a small download to update your game files to the 64-bit version. 2. Apply the GMod CEF Codec Fix
Once the patch is applied, you can launch Garry's Mod. On Apple Silicon Macs, the game will run via with surprisingly high performance, often maintaining 60+ FPS even with numerous addons. Requirement Minimum Spec OS macOS 10.15 (Catalina) or later (required for 64-bit) Processor Intel Core 2 Duo or Apple Silicon (M1/M2/M3) RAM 4 GB (8 GB recommended) Storage 5 GB for base game; 20+ GB recommended for addons Save 50% on Garry's Mod on Steam
: Go to your Steam Library and right-click Garry's Mod . Open Properties : Select Properties > Betas .
Before downloading the patch, you must switch your game version within the Steam Client :
: Double-click the file to open it. It will automatically patch your GMod installation files to support the modern macOS architecture. 3. Launching the Game
: In the "Beta Participation" dropdown, select x86-64 - Chromium + 64-bit Binaries .
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