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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Planned Release Date: 2027

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About This Game

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.

System Requirements

Windows
macOS
SteamOS + Linux
    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10
    • Processor: Ryzen 7 2700 or equivalent.
    • Memory: 8 GB RAM
    • Graphics: GPU that supports Vulkan or DX12/11.
    • DirectX: Version 11
    • Network: Broadband Internet connection
    • Storage: 512 MB available space
    • Additional Notes: Performance is variable to how many objects there are in your lobby.
    Recommended:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10
    • Processor: Ryzen 5 3600 or equivalent.
    • Memory: 16 GB RAM
    • Graphics: nVIDIA Geforce GTX 1080 or equivalent.
    • DirectX: Version 11
    • Network: Broadband Internet connection
    • Storage: 1 GB available space
    • Additional Notes: Performance is variable to how many objects there are in your lobby.
    Minimum:
    • Requires an Apple processor
    • OS: macOS 11
    • Processor: Apple Silicon
    • Memory: 6 GB RAM
    • Graphics: Apple Silicon
    • Network: Broadband Internet connection
    • Storage: 1 GB available space
    • Additional Notes: Performance is variable to how many objects there are in your lobby.
    Recommended:
    • Requires an Apple processor
    • OS: macOS 11
    • Processor: Apple Silicon
    • Memory: 12 GB RAM
    • Graphics: Apple Silicon
    • Network: Broadband Internet connection
    • Storage: 1 GB available space
    • Additional Notes: Performance is variable to how many objects there are in your lobby.
    Minimum:
    • OS: A modern 64-bit Linux Distribution
    • Processor: Ryzen 7 2700 or equivalent.
    • Memory: 4 GB RAM
    • Graphics: nVIDIA Geforce GTX 980 or equivalent.
    • Network: Broadband Internet connection
    • Storage: 1 GB available space
    • Additional Notes: Performance is variable to how many objects there are in your lobby.
    Recommended:
    • OS: A modern 64-bit Linux Distribution
    • Processor: Ryzen 5 3600 or higher.
    • Memory: 8 GB RAM
    • Graphics: nVIDIA Geforce GTX 1080 or equivalent.
    • Network: Broadband Internet connection
    • Storage: 1 GB available space
    • Additional Notes: Performance is variable to how many objects there are in your lobby.
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