multiverse theory [muhl-tee-vers-theer-ee]
1. Also called the metaverse, it is the hypothetical and seemingly infinite number of multiple possible universes (including the universe we inhabit) that comprise everything that can and does exist across the entirety of space, time, matter, energy, and the other physical laws that are present.
EX. Some day I'll go into further detail about my thoughts on this metaphysical subject but, for now, I'll wait until you play and finish Bioshock Infinite.