Screw Nuts - Wood Bolts represents a niche entry in the mechanical puzzle genre, developed by Fruit Puzzle Games for Android devices. The application focuses on spatial reasoning challenges where users manipulate virtual bolts to unlock wooden boards, positioning itself as an accessible yet mentally stimulating option in the crowded puzzle market. The core gameplay revolves around manipulating bolts and screws through touch-based interactions to solve progressively complex mechanical puzzles. Each level presents unique configurations of wooden boards secured by fasteners that require specific rotational patterns or sequential adjustments. The game mechanics employ realistic physics simulations for bolt turning actions, providing tactile feedback through visual and auditory cues. Puzzle complexity escalates through additional fasteners, constrained movement patterns, and multi-step solutions that demand strategic planning and spatial awareness. User experience benefits from minimalist interface design that prioritizes puzzle interaction over complex menus. The touch controls respond accurately to swiping motions for rotating bolts, with visual indicators showing rotation progress and successful movements. Real-world usage patterns indicate strong performance during commutes or offline scenarios, though some users report interface elements could benefit from more precise feedback during intricate manipulations. The offline capability enables consistent gameplay in areas with limited connectivity, making it suitable for travel or waiting periods. User feedback trends highlight appreciation for the relaxing puzzle mechanics alongside concerns about advertisement implementation. Heather PS noted on September 2, 2025, that 'this version very relaxing, unlike some of the other games like this that start off difficult,' indicating successful difficulty progression. However, multiple reviews from Chrispin Elijah on September 1, 2025, criticize 'unnecessary ads' and request features for replaying completed levels and social connectivity options, suggesting areas for interface and monetization improvements. The application demonstrates strengths in offline functionality and progressive puzzle design but faces limitations in feature completeness and advertisement implementation. While the core puzzle mechanics provide genuine cognitive challenges suitable for short sessions, the absence of level replay options and social features reduces long-term engagement potential. Ideal use cases involve casual puzzle enthusiasts seeking offline entertainment during travel or breaks, though serious puzzle gamers might find content depth limited compared to more feature-rich competitors.