Nuts and Bolt Puzzle is a complete Unity casual puzzle project where players solve mechanical challenges by unscrewing bolts, removing plates, and carefully planning the correct order of actions to free each piece. The gameplay focuses on logic, strategy, and spatial thinking as levels become more complex with layered parts and limited move options. The project includes smooth touch controls, level progression, hint systems, win and fail states, and a polished UI flow with menus and results screens. Easily reskin the visuals, add new puzzle elements, adjust difficulty curves, and expand level packs. Perfect for mobile publishing, brain-training games, and rapid prototyping of satisfying mechanical puzzle gameplay.