How do I open a .GMA file?
Programs that open or reference GMA files
- Facepunch Studios Garry’s Mod.
- Crowbar.
- Garry’s Mod Publish Tool.
- Gmad.
12 Jun 2019
Please disable your ad block extension to browse this site.
Click here for detailed instructions on how to disable it
Watch a YouTube video showing how to disable it:
Chrome | Firefox | Internet Explorer