Two Worlds — A parallel universe inhabited by ghosts and spirits; seamlessly switch between the Shadow Realm and the mortal plane and witness a gripping storyline in a world full of myths, destinies and legendary creatures. (wccftech.com)
In his theory, the mathematical universe hypothesis, he updates quantum physics and cosmology with the concept of many parallel universes inhabiting multiple levels of space and time. (discovermagazine.com)
Thus began the first scientific conference held in Azeroth, the online universe inhabited by millions of people playing World of Warcraft. (science.sciencemag.org)