Substance Atlantis
Substance in Unreal Engine 4 allows game developers to use all the power of Substance to deliver a unique experience to the final user.
In-engine texture iteration
PBR (Physically-Based Rendering) Substance files were created Substance Designer and simply imported in the scene. The Substance plugin in UE4 allows access to all parameters of the textures to keep on tweaking while seeing the final result in real-time in the Editor. Having access to all these parameters allows you to create very simple and efficient material templates and keep iterating on them in-engine without having to go back and forth into other software.