Multiverse

Multiverse
There are 2 versions of a Multiverse.

My Multiverse
My definition of a Multiverse is that it's a really really big space that contains tier 1 verses. They can have different size, and they exist in a Lotverse.

Multiverse Theory
The official Multiverse Theory says that the Multiverse contains an infinite number of Universes. While this is the official definition, I use mine.