Demons?

[Esquilax]

He could have made any kind of physical universe with any physical laws but there wouldn't be any organic life in it. We know exact conditions life requires in a universe so science does come into this. He could have made something else completely entirely different but the general idea is that he did, and we will be experiencing these other realities at some point, for most people this will be after death.

Well, you don't know that life couldn't have arisen through other sets of circumstances, so this point is moot anyway, but I like that you're positing a god that isn't omnipotent, though: if there's something he cannot do...