Garry's Mod

If you can dream it, you can create it in Garry's Mod. The sky is NOT the limit. Free Game Features: - Amazing sandbox game to interact freely, no other game comes even close; - Realistic physics based on the Havoc Engine; - More fun player created content available online; - Unlimited options to mash up things together; - Create a car, rocket, catapult or anything you can imagine; - Over 300,000 models, maps and contraptions free for download; - Multiplayer mode to interact with other players around the world in Garry's Mod;