No user reviews · 0 reviews
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!
Platforms
macOS · Linux · Windows
Developer
Publishers
Last sync
October 9, 2026
Horizon Sandbox is a multiplayer physics sandbox where you can let your creativity run wild, create planes, cars, buildings or just screw around with your friends. Not your style? Play some of the mini games! Fly to the end before your friends can, battle with 20 people and compete to build the closest to the theme!
Full Physics Simulation: Everything spawned and even yourself will react to the environment
Contraption Saving & Sharing: Keep your favorite builds, you can even push them to mod.io from in game!
Up to 100 players: In Sandbox & Flight, you can play with up to 100 people, depending on the hardware that the Host uses.
Large Toolkit: In Sandbox, you get the ability to wire electronics, weld objects and manipulate primitives with ease!
Extensive modding support: Create an experience catered to you with either the in-game Mod Editor or the Modding SDK, and then download other's mods via Mod.io!
Horizon Sandbox is not affiliated with mod.io, we use it entirely just to integrate mod sharing into the game.
