In a surprise move Unity has published the engine and editor C# source code on GitHub under a reference-only licence. The technology firm stressed it was not releasing Unity as open source and that ...

While Unity comes with its own editor for creating game worlds, for example, it isn't used for writing code, so Visual Studio Tools for Unity helps coders use the IDE to develop cross-platform games ...

The source code for the components will be hosted on BitBucket, and Unity has prepared a guide for any interested open source contributors. The source for the Unity Test Tools is already available ...