Unity 5 demo lighting

Very nice.

Is it possible to build the whole level (similar to this one) inside Blender and import it in Unity or UE4 ?

Unite Europe 2016 - The making of Adam demo

The geometry transfers fine, as well as material assignments, but the material data itself such as textures, shinyness, ect will have to be reapplied to the materials. There may be workarounds for this, but it hasn’t been worth my time since I typically work with animated characters rather than large levels.