Place the garrysmod10 folder into your Steam directory at C:\Program Files (x86)\Steam\steamapps\sourcemods .
Restart Steam; the version should appear in your game library as a separate entry. Game Information : Sandbox. Developer : Facepunch Studios. Publisher : Valve. Garrys Mod 10 Download PC Game
Garry's Mod 10 , released on November 29, 2006, was the first commercial version of the game published on Steam. While the current version of Garry's Mod on Steam is the most up-to-date version (often referred to as version 13), you can still download and play the specific "Garry's Mod 10" experience if you own the base game. Official Purchase and Installation Place the garrysmod10 folder into your Steam directory
Download the "Garry's Mod 10 Classic" files from community archives like Steam Community groups or ModDB . Developer : Facepunch Studios
: Minimum 2 GHz processor, 4 GB RAM, and 5 GB of storage space (20GB+ recommended).