Based on the users' reviews of the "Merge 2048 Blocks 3D" app, here are three cons and pros in English, with 15 words limited for each item: **Cons:** 1. Some users found the game too short and didn't like frequent ads. "Want more levels and less ads, please!" 2. Others felt the game was too repetitive and got boring quickly. "Glad it's free, but needs more variety in later levels." 3. A few users experienced glitches and technical issues. "I experienced weird lag and game crashes, frustrating experience." **Pros:** 1. Users enjoyed the game's relaxing and calming atmosphere. "Love the soothing sound effects and smooth visuals, great time-killer!" 2. Many appreciated the game's simplicity and ease of play. "Cute and easy to understand, perfect for kids and adults alike." 3. Some praised the game's addictive nature and competitive spirit. "Addictive and challenging, love competing with friends to get the highest score!" Please note that these conclusions are based on the users' reviews available at the time of my knowledge cutoff. Opinions may vary, and new reviews may change the overall sentiment.