I suppose it also depends on what your definition of God is.
I see two Gods in essence of understanding.
1. God the creator of all things. Different religions have different takes on this, including atheists.
2. The most mentions of God in the bible, and even other religions. While most assume that the mentions of God refer to the creator God, there is the very definite possibility that it merely refers to a more superior being or race or species.
I believe there is evidence of lastmentioned. Very visible evidence. The most recent post on my website gives detail - Giants in Greece.