Yarn Fever! Unravel Puzzle represents a growing niche of puzzle games that merge organizational challenges with ASMR relaxation elements. Developed by Getsmart LLC, this Android title distinguishes itself through its textile-themed mechanics and transparent gameplay design that avoids predatory monetization patterns common in the mobile puzzle genre. The core gameplay revolves around extracting colored yarn threads from knitted objects and sorting them into matching colored containers. Players must strategically utilize temporary holding slots while planning several moves ahead, creating a spatial puzzle element similar to classic card sorting games but with tactile yarn physics. The game introduces progressive difficulty through limited slot capacity and increasingly complex color combinations, requiring players to develop strategic sequencing approaches to avoid game-over scenarios. User interface design employs a clean, minimalist aesthetic with vibrant color differentiation and subtle ASMR sound effects during thread movement. The transparent container design allows players to see upcoming yarn colors, enabling strategic planning that reduces frustration compared to games with hidden information mechanics. Real-world usage patterns suggest the game serves as both a cognitive exercise during short breaks and a wind-down activity during evening relaxation periods, with sessions typically lasting 5-15 minutes. User feedback consistently highlights the game's transparent design philosophy as a standout feature. Multiple reviews from Leslie Duffy on July 17, 2025, specifically praise the visible upcoming yarn layers that enable educated strategic choices, contrasting this approach with games that obscure information to force ad views. The 4.8-star rating appears driven by this player-friendly design combined with the satisfying tactile experience of yarn organization. The game's primary strength lies in its ethical design that respects player intelligence while maintaining challenge through legitimate puzzle mechanics. Limitations include relatively limited visual variety in objects and environments across levels. Ideal use cases include stress relief through organized sorting activities, cognitive stimulation through color-based pattern recognition, and serving as a non-predatory alternative to more aggressive mobile puzzle titles.