The concept of spiral field theory was presented by the author in his previous books - "Spiral Grain of the Universe," Unified Spiral Field and Matter," and "Unified Spiral Nature of the Quantum & Relativistic Universe." This book further expands the concept of the spiral field that leads to the unification of strong, gravitational and electric forces. The highlights of the book a) Pesentation of new prime elements of Nature, the torix and the helix, based on positive and negative energy; b) Description of matter, ether, electromagnetic waves, and neutrinos by the same fundamental equations; c) Confirming the possibility of instantaneous transmission of waves; d) Unification of strong, gravitational, and electric forces; e) Identifying likely canditates for "dark" matter; f) Outlining a road map to a unified field theory.