s&box is a modern game engine built on Valve's Source 2 and .NET technology, providing an intuitive editor for game creation.
The engine addresses the need for a contemporary game development platform by combining Source 2's proven architecture with modern .NET capabilities. Developers write game logic in C# and use the integrated editor to design levels, manage assets, and iterate on gameplay. The tool handles the underlying engine systems while exposing APIs for custom game behavior through .NET code.
s&box suits developers who want to ship games without building engine infrastructure from scratch and who are comfortable with C# as their primary scripting language. The project is available both as a prebuilt editor downloadable from Steam and as full source code that can be compiled locally. Those choosing to build from source need Visual Studio, .NET 10 SDK, and Git; the Bootstrap script automates dependency resolution and compilation. The engine is particularly suited to teams or solo developers targeting PC platforms who value rapid iteration and a modern development workflow.
The project maintains an active public issue tracker and contribution guidelines, indicating openness to external involvement. Documentation is comprehensive, with tutorials and API references available on the official site. The source code is licensed under the MIT License, though certain native binaries in the distribution are covered separately under the s&box EULA, and third-party components retain their original licenses.
