C# support is/was its killer feature. Game dev without the pain of C++, and without being limited to non-standard scripting languages (or worse, visual scriptin

C# support is/was its killer feature. Game dev without the pain of C++, and without being limited to non-standard scripting languages (or worse, visual scripting spaghetti) With Unity, you can use C# for everything, from the simplest 'spin this object around' script to customised rendering pipelines and complex in-editor tools. Performance was clearly good enough for the engine to become wildly successful, particularly amongst indie/mobile developers making smaller games, and experienced users learn to avoid the main performance pitfalls.