Get Garry’s Mod from its official Steam store listing, then purchase and install it through the Steam client. Steam lists Windows 10 as the minimum operating system. The listing showed the paid base game at $9.99 when accessed on October 3, 2026; check Steam for the current price and regional availability.
Download Garry’s Mod through Steam
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Open the Garry’s Mod page on Steam.
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Sign in to Steam, or create an account if you do not have one.
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Purchase the game through Steam. Garry’s Mod is a paid listing, not a free standalone installer.
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Open the Steam client and go to your Library. Select Garry’s Mod, choose Install, and follow the prompts to select an install location.
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When Steam finishes downloading and installing the game, launch it from your Library.
Check whether your Windows 10 PC meets the requirements
Steam lists the following specifications. They are store-listed requirements, not a guarantee of a particular frame rate or performance on every PC.
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| Specification | Minimum | Recommended |
|---|---|---|
| Operating system | Windows 10 | Windows 10/11 |
| Processor | 2 GHz | Not stated on the Steam listing |
| Memory | 4 GB RAM | Not stated on the Steam listing |
| Graphics | 1 GB dedicated VRAM | Not stated on the Steam listing |
| DirectX | DirectX 9.0c | Not stated on the Steam listing |
| Internet | Broadband internet | Not stated on the Steam listing |
| Available storage | 10 GB | 25 GB |
These figures come from Valve’s Steam listing, accessed October 3, 2026. Leave adequate free disk space before installing; the recommended storage figure is higher than the minimum.
What you get with the base game
Steam describes Garry’s Mod as a physics sandbox without predefined aims or goals. Its listing includes single-player, online PvP and co-op, LAN play, Steam Workshop, Steam Cloud, a level editor, and Source SDK features. These are store-page descriptions, not a promise that any particular community add-on or server will be available or included automatically.
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Workshop content and other game requirements
Steam Workshop is a listed feature, but community-made content is distinct from the base game. Find and subscribe to items through the Workshop; Steam handles supported downloads. Individual add-ons may have their own setup or compatibility requirements.
Some multiplayer servers or game modes may require ownership of other games. Steam names Counter-Strike: Source and Team Fortress 2 as examples. This is server- or mode-specific, not a requirement for installing the base Garry’s Mod game.
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