Coffee Stack represents Rollic Games' entry into the casual simulation genre, blending physics-based stacking mechanics with coffee shop management elements. The game occupies a niche between arcade-style stacking games and more complex restaurant management simulations, offering accessible gameplay with progressive complexity as players advance through levels. The core gameplay involves collecting coffee cups and stacking them while navigating through various environments. Players can customize beverages with different flavors, decorative sleeves, and decorative lids, creating visually appealing coffee creations. The progression system allows users to upgrade their coffee shop equipment and expand their menu offerings, introducing new coffee varieties and customization options as they advance through the game's levels. User interface design employs bright, colorful graphics with intuitive touch controls optimized for mobile devices. The game utilizes a vertical orientation that facilitates one-handed play, making it suitable for short sessions during commutes or breaks. Real-world usage patterns show most players engage in 5-10 minute sessions, with the game's reward structure designed to encourage repeated short play sessions rather than extended gameplay marathons. User feedback consistently highlights the game's satisfying stacking mechanics and creative customization options. Reviewer Slayqween2017🎀 (August 1, 2025) noted appreciation for the coffee-making elements, while robot77490 (July 30, 2025) acknowledged overall enjoyment but cited frequent advertisements as a drawback. Multiple reviewers including Pbutter love (August 6, 2025) emphasized the upgrade system and shop management aspects as particularly engaging features that maintain long-term interest. The game demonstrates strengths in its polished visual presentation and satisfying core mechanics, though the advertising frequency presents a notable limitation for some users. Coffee Stack works best as a casual distraction game rather than a deep simulation experience, with its design particularly suited to players seeking brief, engaging sessions that combine creative expression with simple physics-based challenges.