IMPORTANT - This map is designed for GMod Stranded, Link:

No Credits to me, original link here:

Requires CSS and Half-Life 2 for some props

Steam Workshop:

This download looks like an addon. You need to extract the downloaded zip and put the addon folder in your Garry's Mod addons folder. You should end up with a directory structure similar to below:

  • steamapps
    • common
      • garrysmod
        • garrysmod
          • addons
            • gms_slackisland_v1 <-- Addon folder!
              • e.g.
              • lua
              • maps
              • materials
              • models
              • etc

Don't know where the Garry's Mod folder is or how to extract zip files? See more useful installation tips.

  • gms_slackisland_v1/
    • maps/
      • gms_slacksisland_v1.bsp
      • gms_slacksisland_v1.png