Based on the users' reviews on the App Store, here are three cons and pros for the "Color Zombie 3D" app: **Cons:** 1. Some users found the game too easy and repetitive. "The game gets old quickly, too easy and repetitive." 2. The lack of challenging levels and varied gameplay was a disappointment. "Lack of challenging levels, gets old after a while." 3. Some users experienced bugs and glitches during gameplay. "Bugs and glitches, frustrating experience, need fix." **Pros:** 1. Users enjoyed the colorful and visually appealing graphics. "Amazing graphics, so colorful and fun to play." 2. The game's simplicity made it accessible to a wide range of players. "Simplicity makes it easy to play, great for all ages." 3. Many users appreciated the relaxing and calming gameplay experience. "Relaxing and calming, great way to unwind after work." Note: The reviews are based on the content available on the App Store at the time of my knowledge cutoff.