GMStranded is a gamemode about working together to survive with your fellow teammates, called the Stranded.
From the official description:
Work alone or from tribes to survive, hunt and share resources to live another day in the wilderness. As your survival skills increase you will get more tools and ways to survive. Have you got what it takes?
You're going to need
Counter-Strike: Source as this gamemode uses content from it. This gamemode comes with a modified version of Simple Prop Protection 1.5.
Download here:
http://www.garrysmod.org/img/?t=dll&id=57195
You also need to download a bugfix, which can be found here:
http://www.garrysmod.org/img/?t=dll&id=57519
For more information, including support and information useful for making maps for this gamemode, please check out the
forum thread.[...]