If we do wish to take the theory seriously, as we should since it is so powerfully accurate, then we are led to the Many-Worlds Interpretation as the most "face-value" interpretation.
Many Worlds? The Everett Interpretation
Many Worlds? The Measurement Problem
If we accept quantum mechanics as an accurate description of the world at the microscopic level, then we must translate its mathematical framework into an interpretation.
Many Worlds? Why Quantum Mechanics Requires an Interpretation
Many laymen will already have heard of this theory in popular science and sci-fi shows, but may be unsure of how plausible it really is. Is the MWI a serious academic proposal? Or is it just a fanciful interpretation that lends itself well to convoluted plot lines in TV shows?
Many Worlds? Do they Exist?
Many Worlds theory is undeniably a serious academic field, yet most know very little about it other than that it claims there are more worlds than this one, and that it has something to do with quantum theory. I hope you will enjoy learning a bit about what this theory is and why it deserves to be taken seriously.
Universes of Another Kind
There are other kinds of multiverse that physicists discuss, but there's an entirely different kind of multiverse that is discussed by philosophers, not physicists. This is the multiverse of "possible worlds", and was introduced as a semantics that made modal statements much easier to analyse.
The Platonic Realm 