This map is based of the game SCP containment breach, it comes with 2 versions, a playable one, in which i only have the start finished, and one for machinima, or other videos. To tell what map is what, read the names, one should be named around not playable and the other should say something around playabe.

Here is a video displaying the map http://www.youtube.com/watch?v=EPH8Id8DwLY&feature=my_liked_videos&list=LLWdaRBSYQP6wWfF3Xiw8wEg

To install, simply unzip the file and move it to your Programfiles/steam/steamapps/USERNAMEHERE/garrysmod/garrysmod/addons

If moving them to your addons folder does not install it, then open up the file inside the zip and move them all to Programfiles/steam/steamapps/USERNAMEHERE/garrysmod/garrysmod/