Based on the user reviews of Flash Hero: Gangster Revenge 3D, here are three pros and cons in 15 words or less per item: **Pros:** 1. Engaging storyline with multiple missions and challenges to overcome. 2. Graphics are impressive, with detailed 3D environments and characters. 3. Simple yet addictive gameplay makes it hard to put down. **Cons:** 1. In-app purchases are frustratingly frequent and expensive. 2. Advertisements are intrusive and disrupt gameplay experience. 3. Limited character customization options are disappointing.