GMod is a Sandbox Modification. Using GMod you can pose ragdolls. This means can position people from HL2/CS/DoD and change their faces. A big comic book creating community has popped up around this feature. Using GMod you can build. Take props from HL2/CS/DoD and weld them together to make walls. Axis a wheel to it to create a working car. Rope some cans to the back. A big contraption creating community has popped up around GMod - creating such things as Rube Goldberg devices, catapults, cannons, bridges etc.. Using GMod you can make your own weapons. That's right, make your own weapons. Using Lua you can create a custom weapon to do just about anything. If you're new you can change simple things like rate of fire, models, sounds. If you're awesome the world is your oyster, mass changing guns, melon cannons, jetpacks. GMod gives you the freedom to do any of these things in single player or online with your friends.
I took the idea for the basic layout from the “real” Area 51 in the Nevada desert using Google Maps (so secret it’s on satellite view!) and from various websites dedicated to the base. Intended as a sandbox build map with something for everybody and designed for long-term use on busy servers, after 6 months of development and many betas tested by Bunglist Build regulars (thanks guys!) we are ready to release this map to the public. Now available for download now is a “Release Candidate” version, any problems discovered in this version will be fixed before the final release, which will be posted here when it is done. If you want to see map now the latest version is up on our server, drop in and have a look around!