Gods of Gears examines the development of ancient mechanical devices across Greece, Egypt, China, Rome, and the Islamic Golden Age. The book documents the construction and function of historical automata, including self-operating temple doors, hydraulic machines, astronomical clocks, and early mechanical figures. Drawing from surviving manuscripts, archaeological evidence, and modern reconstructions, it traces how ancient engineers applied principles of physics, mathematics, and craftsmanship to create devices that imitated life and movement. The book situates these inventions within their cultural and historical contexts, highlighting their influence on religious practices, courtly entertainment, scientific inquiry, and the evolution of technology.