Based on the users' reviews, here are three cons and pros of the Cube Runner 3D app: **Pros:** 1. "Highly addictive game with smooth 3D graphics and challenging levels." 2. "Fun and simple gameplay that's easy to learn, but hard to master." 3. "Great time-killer with daily rewards and leaderboards to stay competitive." **Cons:** 1. "Some levels are too short and feel rushed, lacking in challenge and fun." 2. "In-game ads can be intrusive and ruin the gaming experience at times." 3. "Limited customization options for characters and environments are a letdown."