
Horizon Sandbox is a multiplayer physics sandbox. Bolt a thruster to a pallet and call it a plane, send your friend to the stratosphere, build anything, the only limit is your imagination!

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Horizon Sandbox is a multiplayer physics sandbox where your creativity takes center stage. Bolt a thruster to a wooden pallet and call it a plane, construct massive mechanical structures, or just cause chaos with friends. There are no missions, levels, or objectives - every server is an open sandbox where you and up to 100 other players build, wreck, and collaborate however you want. Build anything, the only limit is your imagination!
Features:
Full Physics Simulation: Every object you spawn reacts dynamically to the environment. Push it, weld it, launch it, and experiment with realistic physical forces.
Contraption Saving & Sharing: Keep your builds alive forever. Save your custom creations locally as portable files, making it easy to back up your progress or share your designs directly with other players.
Up to 100 Players: Join massive servers to collaborate on giant structures, host physics experiments, or engage in chaotic, large-scale multiplayer sandbox gameplay.
Welding, Wiring, and Engineering Tools: Link components together using an in-depth wiring system. Connect sensors, buttons, and thrusters to build fully functional vehicles, automated logic systems, or even complex in-game computers.
Extensive Modding Support: Customize your experience by creating your own custom content or downloading a large variety of community-made mods, maps, and tools.
Sessions can run anywhere from a few minutes to several hours, depending on what you're building and who you're building it with.
Horizon VR Rating: Intense
This is a high-intensity VR experience. Expect free locomotion, fast-moving physics objects, unpredictable collisions, and chaotic multiplayer destruction - all of which can be disorienting or nausea-inducing for players new to VR. We recommend players with prior VR comfort experience, and suggest first-time VR users try the game with a friend nearby and take frequent breaks.
Create a free price alert on this page and KingsPrice will email you when Horizon Sandbox drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.