Similar implementation for the open source game engine 'Godot' (Quickly picking up traction this year) as there is for Unity, UE4 and such.
Thanks to the MIT License Godot is under there would be no such license issues as with copy-left licensed opensource projects (such as B3d)
https://www.youtube.com/watch?v=fNeTHHTDYso The latest demo by the devs illustrates the upgraded graphical possibilities in ver. 3
With Substances integrated directly in engine great things could be achieved in combination with the new render pipeline.