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How to Change Gamemode in GMod

Updated April 17, 2017

"Garry's Mod" is an independent sandbox game playable only through the Steam content delivery service. In order to run it, you must have a game installed that uses the Source engine, such as "Half-Life 2," "Left 4 Dead" or "Counter-Strike: Source." If you want to change the gamemode setting, you must navigate into the "server.cfg" configuration file, found within the installation folder.

Open the folder where you chose to install "Garry's Mod." By default, this is in "C:\Program Files (x86)\Steam\steamapps\username\garry's mod\," where "username" is your Steam username.

Double-click "server.cfg".

Locate the "sv_defaultgamemode" option within the file, located toward the top. Change the gamemode to whatever option you want. For example, type "sandbox" for open-world gameplay or "SpaceBuild" for the Space Build game mode.

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About the Author

Seth Amery is a long-time writer whose specialties extend to all areas of video games, having written thousands of tutorials, fully-featured strategy guides and reviews across all platforms. His experience also includes one-on-one relationships with major gaming publishers to write previews on upcoming games, establish interviews with game designers and hold early game giveaways.