Brain Who? Tricky Riddle Tests by Teos Oyun presents itself as a comprehensive puzzle gaming experience for iOS users, positioning within the crowded brain-training market through its focus on varied riddle formats and progressive difficulty scaling. The app markets itself as an ultimate thinking game experience, promising to engage users with mind-bending challenges that test both intelligence and creative problem-solving abilities across numerous levels. The application features multiple puzzle categories including logic problems, word games, visual challenges, and mathematical riddles. Each level introduces new mechanics, requiring players to adapt their thinking patterns and employ different cognitive strategies. The progression system gradually increases complexity, with later stages incorporating multi-step solutions that combine various puzzle types. The game maintains player engagement through immediate feedback mechanisms and visual indicators of progress, though the puzzle design occasionally relies on obscure solutions that may frustrate some users. User interface design employs a clean, minimalist aesthetic with intuitive touch controls and clear visual hierarchy. The navigation system allows seamless movement between levels, while the hint system provides assistance without completely revealing solutions. However, real-world usage patterns reveal significant interruption points, particularly regarding advertisement frequency. Players report experiencing two video advertisements between most levels, creating a fragmented gameplay experience that disrupts cognitive flow and immersion in puzzle-solving activities. User feedback consistently highlights the advertisement frequency as a primary concern, with multiple reviews specifically noting this limitation. The review from Me want robux18463 on June 15, 2025, explicitly states 'Each level is two adds,' while RoRoDub11's May 6, 2025 review comments 'there Is to many ADS it is so annoying when you are playing a nice level.' Despite these criticisms, both reviews maintain 4-5 star ratings, suggesting the core puzzle quality remains compelling enough to retain user engagement despite intrusive monetization. The application demonstrates strengths in puzzle variety and cognitive challenge design, providing genuine mental stimulation for enthusiasts. However, the aggressive advertisement implementation significantly diminishes the user experience, particularly for extended play sessions. The game appears most suitable for short, intermittent play sessions where advertisement interruptions prove less disruptive, rather than extended puzzle-solving marathons. The lack of a premium advertisement-free purchase option represents a notable limitation in the current monetization strategy.