Those animations look amazing!! Great job!
Very cool review of the making of Spellbreak. Would be even more cool to see some videos inside UE4 showing how they do a few very specific things unique to them.
This was so helpful for me. I'm hoping to adapt your tutorial to pull off something similar comparing modern satellite imagery with historical maps. No topo, so my steps should be simpler, but I'm a novice with Blender and you've really helped. Thanks!
Take a look at a free archive by Andrew Alex with tileable 2K PBR textures which you can use for your commercial and personal projects.
The folder is a part of his material study which he worked on in his free time. Alex mixed Zbrush and Substance Designer to build these textures.
Find him on Artstation to look at his other substance experiments.