Mahjong Solitaire by Topy Games presents a mobile adaptation of the classic tile-matching puzzle, specifically optimized for senior audiences seeking cognitive stimulation through accessible gameplay. The application occupies a niche position within the puzzle genre by deliberately avoiding competitive elements and time constraints, instead focusing on providing a stress-free environment for pattern recognition and strategic thinking. The core functionality revolves around matching identical tile pairs from layered arrangements, with several innovative tile stacking patterns that maintain engagement across multiple sessions. Key operational features include adjustable tile sizing for visibility, multiple background themes for visual variety, and an undo function that accommodates tactical experimentation. The game mechanics incorporate traditional mahjong symbols while implementing clear visual differentiation between tile types, ensuring recognizability even for users with minor visual impairments. User experience demonstrates thoughtful age-appropriate design through high-contrast color schemes, simplified menu navigation, and consistently large touch targets. Interface elements remain static during gameplay to prevent accidental misclicks, while the absence of time limits allows for deliberate decision-making. Real-world usage patterns show extended session times with frequent return visits, suggesting effective retention through gradual difficulty progression and predictable reward cycles. User feedback consistently highlights specific satisfaction points, with Kathy noting on June 25, 2025 that 'the tiles are colorful and the ads are minimal,' while Kristel Crisostomo observed on July 31, 2025 that the experience remains 'relaxing, fun, no time pressure, not getting too difficult.' Mari Anderson's July 23, 2025 review additionally praises the 'different ways to pile the tiles' as a nostalgic element that enhances engagement. The application demonstrates notable strengths in accessibility design and ad management but faces limitations in feature depth for advanced players. While the senior-focused approach succeeds in its primary demographic, younger users might find the progression system insufficiently challenging. Ideal usage scenarios include cognitive maintenance exercises, low-stress entertainment during downtime, and visual recognition practice for older adults seeking digital engagement.