What are some similarities between the Hebrew, Greek, and Japanese creation stories?
Well, in the Hebrew and Japanese ones, the people who tell the stories (Jews and Japanese) have a special relationship with the creator(s). In the Japanese and Greek ones, the gods act like spoiled children and lots of family feuds and tantrums are featured. edit: they all take place during an earlier time when the physical laws of the universe were different, and gods walked with men.
