As someone who has been creating games with Unity for over 9 years, I can assure you that I bring a wealth of experience and ingenuity to the table. My proficiency extends beyond just game development, but also game optimization - ensuring your game runs smoothly across all platforms like Android, iOS, Webgl, and PC. Part of this optimization includes 3D level design which could be a great touch for the top-down perspective you seek, leveraging my expertise in creating 3D environments using assets and shaders for fantastic lighting effects.
One major advantage I have over others is my ability to create compelling multiplayer experiences. I have built several multiplaying functionality games providing real-time synchronization between multiple players easily. Drawing from my vast knowledge, I can add crucial features such as Firebase notifications and analytics which would allow you to gather valuable insights about your users' behaviour. Additionally, I'm skilled at integrating social platforms like Facebook and Twitter so we can tap into the power of community and user connectivity.