Terror Engine: Blood Ring Edition

This is a Fan made Remake Of @ZeoWorks game engine Terror Engine. And it was a Game Engine but with Unity Running on it but how does work?

And how the hell did Sean Toman (ZeoWorks) Created his own Game Engine?

But despite the fact that I think he wants his own Game Engine but where did all the models come from?

But no he created it or he had a team that he told them to create a game engine.