Horizon Sandbox is a multiplayer physics sandbox game using Horizon Online to manage its connections & internal networking. It is to include full modding support in Lua & C#, support on various devices, and to give the user the ability to make whatever they can imagine.
Trailer
Frequently asked questions
Is Horizon Sandbox dead or still active?
Horizon Sandbox's release status is unknown to us. We don't have verified information on whether it is running.
What platforms is Horizon Sandbox available on?
Horizon Sandbox is available on Windows, macOS, and Linux.