A game creation platform based on the Source 2 engine for building and sharing games in one environment.

s&box is an open-source game creation platform and engine. Built on Valve's Source 2 engine and .NET technology, it provides an integrated environment where users can develop, share, and play games. The platform focuses on reducing the friction between creation and execution by allowing developers to test their work without leaving the environment.
The software is available as a downloadable editor via Steam or as a source build for developers who wish to modify the engine. Users can utilize the intuitive editor for game design or compile the engine from the provided repository to contribute to its core development. The installation process for source builds is handled through a bootstrap script that manages dependencies and builds the binaries for the game and editor.
The architecture combines native binaries with an open source codebase, allowing for both high-level game design and low-level engine modification. It is designed for game developers who want a modern editor and the flexibility of .NET for scripting and logic. The project includes a structured contribution process and a dedicated issue tracker for bug reports and feature requests to ensure the engine evolves based on community needs. Documentation and tutorials are provided through a dedicated developer portal to assist with onboarding.
While the core source code is licensed under the MIT license, certain native binaries are distributed under a specific EULA. This hybrid licensing model allows the project to maintain its Source 2 foundations while remaining open for community contribution. It is a versatile development platform for those seeking a Source 2 based workflow.
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