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

Project Samples

UnityCsReference Screenshot 1

Project Activity

See All Activity >

Categories

Source Code Management

License

MIT License

Follow UnityCsReference

UnityCsReference Web Site

Other Useful Business Software
$300 Free Credits to Build on Google Cloud Icon
$300 Free Credits to Build on Google Cloud

New customers can spin up VMs, build with AI, and query data at no cost.

Put your $300 in credit toward real workloads, then keep building with free monthly usage for 20+ products. No commitment and no charge until you upgrade.
Start Free
Rate This Project
Login To Rate This Project

User Reviews

Be the first to post a review of UnityCsReference!

Additional Project Details

Operating Systems

Linux, Mac, Windows

Programming Language

C#

Related Categories

C# Source Code Management Software

Registered

2025-08-14
Report inappropriate content