Based on the user reviews, here are three pros and cons of the Pipe Runner 3D app: **Pros:** 1. "Addictive gameplay keeps me coming back for more, strategy and logic are a great challenge." 2. "3D graphics are stunning, smooth animations and great sound effects make it immersive." 3. "Variety of levels and game modes keeps things fresh, with new challenges always coming up." **Cons:** 1. "Some levels are too easy or too hard, inconsistent difficulty makes it frustrating." 2. "Lack of customization options for pipe materials and colors restricts creative expression." 3. "In-app purchases for extra lives and boosts feel like a money grab, not fair." Note: The reviews and opinions expressed are based on the available user reviews and may not reflect the entire user base.