Garry's Mod

Garry's Mod is a sandbox physics game that gives you the tools to build, experiment, and play your way. Spawn props and ragdolls, weld, rope, and hinge them together, and create contraptions that obey Source engine physics. Dive into countless community-made modes from Prop Hunt and Trouble in Terrorist Town to DarkRP, or invent your own experiences with Lua scripting. With Steam Workshop support, thousands of addons, maps, and tools keep the game endlessly replayable solo or online with friends.