If you do think it was a God that created the Universe, then which one? Was it the Abrahamic monotheistic God, the Ancient Egyptian Polytheistic Gods, or the myriad of other Gods that have existed over the Millennia?
If you come to the conclusion that it was one of these, then you have to go by the full religious laws of that God's religion. For example if you accept it was the Islamic God, then you have to follow and believe in all Islamic laws and dogma. If you don't believe it's any of these, rather an unnamed God who we can't comprehend, then this is also highly unlikely. Why did a God who was intelligent enough to create the Universe, not bother doing something as meagre as informing us petty humans of his existence?
Therefore it's highly unlikely that such a God exists. Even if it did, then it doesn't matter because he didn't bother informing us or threaten us with hell if we didn't believe in him. It's also highly unlikely that it's any of the religious Gods simply due to the vast number of religions that have existed, and also because of the ridiculous laws and myths that exist in religions.
In short we might not ever know but in the end it doesn't matter. And a God being the answer is highly unlikely 







