Board Thread:Questions and Answers/@comment-25235588-20190706152457/@comment-36309590-20190707202502

Basically an Omniverse is something that contains multiple multiverses, just as a multiverse contains infinite universes, and the Totality is a space, probably not the most accurate term for it but it's the best I've got, containing every Omniverse in existence.

Obviously there are variations to this depending on what cosmological model you choose to go with such as the Box or the Omega Omnisphere, but they're pretty much exactly the same as the Totality. If not in contents then at the very least in concept.