no, there really are only two possibilities.
think about it.
either, A) the universe, all of its potentialities, has always existed, will always exist, its cause and origin being completely unexplainable
or, B) "God" created it. "God" being a term for a supernatural creator of the universe. a diety that is as incomprehensible and as unexplainable as an uncaused universe, no more and no less. but in this situation it is not the universe that is unexplainable, its the diety that created it.
no other options.
Basically, God is the idea that there is indeed an explanation for the universe. Even though its something we can never understand ourselves, there is indeed some logic behind it.