This is a fan project, like the Lord Inquisitor was. GW has absolutely nothing to do with it!
Very Very Cool Indeed Indeed
This material creation tutorial by Emre Karabacak has shared a material creation tutorial that will guide through all the essential steps of building a concrete tile material in Substance Designer. The thing here is that once you understand the principle, you can create all kinds of tile materials. The sky’s the limit.
In the end you’ll be importing the resulting texture maps into Marmoset Toolbag and using the result as an Unreal Engine 4 PBR shader.
The first part of the tutorial is about setting up the material in Substance Designer:
The second one will tell you how to create a new shader in Marmoset Toolbag: