Garry's Mod

Garry's Mod is a physics sandbox from Facepunch Studios, built on the Source engine and published by Valve. It has no set goals or story: it hands you the tools and lets you decide what to do with them.

You can place and connect objects, build machines and vehicles, stage scenes with characters and film them. At its core it is about creativity, and the Steam Workshop adds thousands of maps, weapons and game modes you can install on top.

There is nothing to measure here, as the game has no ending and your time depends on what you want to build. It suits anyone who enjoys experiments, physics play and creativity without rules. Rental gives you the single-player sandbox with its built-in tools; servers, online modes and some Workshop content need a network connection.