Creator here.

This is an Open Source project I started 7 years ago to help in our research lab. Right now the engine is very mature and stable and it has many features (irradiance probes, realtime reflections, skeletal animation and blend shapes, etc) but most importantly, because it is an open source project, the idea is to be very modular so people can extend it easily. It even has an Addons system that let you include external code from the editor.

I do not publicy it too much because there are still some parts that I want to improve before release it as 1.0.

Right now Im finishing the shader graph editor and working on a better backend.

Feel free to ask anything :)