This theory proposes a conceptually new model of the universe based on the principle of fractal closure and recursive organization of matter. Unlike traditional cosmological models, the "Superuniverse Theory" rejects the idea of an elementary particle as the ultimate unit and instead describes reality as an infinitely nested structure, where each scale level gives rise to the next. It presents a scenario of natural cosmic completion through the inner evolution of intelligence, while logically excluding the physical possibility of inter-universal transition. The work is both philosophical and physical in nature and is intended for researchers interested in the ultimate forms of matter, consciousness, and space.