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SOURCE 2 · C#
Build and play games with s&box.

Facepunch's game engine and creation platform — make games in C#, or jump straight into community games.

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NOT AFFILIATED WITH FACEPUNCH STUDIOS · © 2026 s&box Wiki (community)
Docs/Code
Code

Advanced Topics

Code Generation

Wrap methods and properties with the [CodeGenerator] attribute. This is the mechanism behind RPCs and networked variables.

Hotloading

How hotload works, how to keep it fast, and the pitfalls to watch out for.

Unit Tests

Adding a unit test project to your game, and testing code that needs the engine.

Source: Facepunch/sbox-docs (CC-BY-4.0) · updated 2026-08-03. Read it rendered on the official docs.

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Api Whitelist
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Console Variables
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Community wiki — not affiliated with Facepunch Studios. For the latest and most authoritative information, see the official developer wiki.