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UnityCsReference is the C# reference source code for the Unity engine and editor. It provides developers transparency into how Unity's C# APIs are implemented under the hood but is strictly for reference—not for modification or redistribution without a commercial license. The terms of use do not permit you to modify or redistribute the C# code (in either source or binary form). If you want to modify Unity's source code (C# and C++), contact Unity sales for a commercial source code license. The repository includes third-party code subject to third-party notices.
Features
- Contains the full C# implementation of Unity engine and editor APIs
- Useful for educational insight into Unity's internal workings
- Includes third-party code along with proper notices
- Encourages filing bugs via Unity Bug Reporter, though does not accept pull requests
- Supports viewing of Editor, runtime, module and binding components
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