The Multiverse

The Multiverse is the sum of all the various Material Planes, which are all alternate realities in parallel dimensions descended from the one primordial Material Plane. It is not possible to travel between the various Material Planes of the Multiverse without travelling via the Ethereal plane of The Immaterium.
While there are many Material Planes within the Multiverse, they each are linked to a single Divine Realm and single Underworld within The Materium. Similarly, there is also only one Ethereal plane that links all of them and one Realm of Faerie.

Type

Plane of Existence