Difficult to say.  There are many possibilities, none really holding an edge to the next.  It is certainly possible that there exists a Supreme God as found in religions such as Christianity, Islam, and Judaism.  It is also possible that there are numerous gods, such as those found in Hinduism.  It is also quite possible that no supernatural beings exist.  This debate will rage on for years to come, but don't expect a clear resolution any time soon.
Does god exist? Why?