Garry’s Mod is a sandbox game only available on Steam.
tags: community-based game-creation game-engine open-world physics-sandboxGolems Universal Constructor or Golems is a 3D recreational physics simulator.
tags: building-game construction-game educational-game physics-game physics-simulationThis game is an open sandbox in which you may place items into the world and interact with them. Create your own levels and games while having fun and being creative.
tags: block-building blocks construction-game games multiplayer