The idea that "Gods" are actually just players who control or dictate or control different religions, but then were do agnostic people fall into play? idk. so straying away from a religious aspect maybe we have 2 selfs, one in this reality and one in another, and our conscious is stuck in this reality, but our subconscious or unconscious mind is how we access the other reality, and its not until we die that we transfer back to that reality, and our life is just a complete game, or complex animation, that we just cannot remember entering. i dont actually believe all this, but they are just thoughts that go through my head from time to time. hah
depends on your philosophy of mind. if you believe in monism, you believe that mind and body are one. But if your dualistic, which i think gets a little more complex with all of the different possibilities and theories, you believe that your conscious mind is separate from the brain and the body, therefor allowing the possibility that when you are done with your body, it may move on to some other realm/dimension ect.
I lean towards dualism, but take monism to be a possibility as well. Imagine anything innovative as an expansion pack. Every exemplar of a paradigm is the expansion, and the world is upgraded and we understand and take things to be "true" completely differently to that. And as for sleeping, this may be a strange comparison but, have you seen that new little kids movie or whatever called "Wreck it Ralf?" if not, its basically about how after the arcades close all the characters in the games can meet together, and do whatever until they are supposed to go back before the arcade opens, and they just made a movie of the idea. but imagine that sleeping is when our player is taking a break from the game, and we travel through our version of a cyber world.