Based on the users' reviews of Mahjong King app, here are three cons and pros: **Cons:** 1. "Glitches and crashes happen frequently, ruining gaming experience." (15 words) 2. "Limited levels and lack of variety in game design and music." (15 words) 3. "In-app purchases and ads are overwhelming and frustrating." (15 words) **Pros:** 1. "Addictive gameplay and relaxing atmosphere, perfect for stressful days." (15 words) 2. "Great graphics and sound effects, engaging visuals and music." (15 words) 3. "Various game modes and levels, including daily challenges and tournaments." (15 words) Note: I've summarized the reviews in 15 words or less, as requested.