S&box

S&box (pronounced Sandbox) is an upcoming open source video game development platform and engine by Facepunch Studios. It is built using a heavily modified Source 2 engine and will be released on April 28, 2026. S&box is intended to be a spiritual successor to ''Garry's Mod'' and is designed to allow users to create a variety of games and experiences.

Source code

github.com →

s&box is a modern game engine, built on Valve's Source 2 and the latest .NET technology, it provides a modern intuitive editor for creating games. If your goal is to create games using s&box, please start with the getting started guide. This repository is for building the engine from source for those who want to contribute to the development of the engine. If you want to build from source, this repository includes all the necessary files to compile the engine yourself. Once you've cloned the repo simply run Bootstrap.bat which will download dependencies and build the engine. The game and editor can be run from the binaries in the game folder. If you would like to contribute to the engine, please see the contributing guide. If you want to report bugs or request new features, see sbox-issues. This project includes third-party components that are separately licensed. Those components are not covered by the MIT license above and remain subject to their original licenses as indicated in game/thirdpartylegalnotices .

Excerpt from the source-code README · 2,561 chars · not written by Vinony

Wikidata facts

Official website: sbox.game

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announcement date: 2017-09-04
FAQ URL: sbox.game/dev/doc/about/faq

~5 min read

Article

4 sections

Contents

History
Features
References
External links

S&box (pronounced Sandbox) is an upcoming open source video game development platform and engine by Facepunch Studios. It is built using a heavily modified Source 2 engine and will be released on April 28, 2026. S&box is intended to be a spiritual successor to ''Garry's Mod and is designed to allow users to create a variety of games and experiences.

== History == In September 2015, Garry Newman, the creator of Garry's Mod, first mentioned that a sequel was in development. In September 2017, Facepunch Studios officially unveiled S&box as a prototype. This early version was built using Unreal Engine 4 (UE4), incorporating a hotloading C# layer. The developers used UE4 for core features like rendering, networking, and physics. At this point, it was uncertain whether S&box would be released as a moddable platform or used internally by Facepunch.