RetroGaming

Dark Souls is largely inspired by Miyazaki consuming western media without being able to fully understand it. He had to try to fill in the gaps himself. I assume that's what they meant.

A good example of this is Tunic, where the manual is not understandable at first, but you can figure out as you play. These games create very interactive world building where you're supposed to pay attention and piece things together yourself instead of being handed the solution.