If the many-worlds theory is correct; if the multiverse exists, then there are infinite universes existing "alongside" each other, each with its own unique set of laws of energy and physics. It's not likely that we'll ever get to understand, let alone see, these other universes, even if we did prove their existence. But since there would be INFINITE worlds - well, that leaves room even for my limited, human imagination...
Thus this "Infiniverse" is a small snapshot, taken from my mind, of what some of these worlds, and the portals that bridge them, might look like. It is also part of my "The First" series of sci-fi stories/pieces.