As an experienced game developer with a prime focus in Unity 3D, I am adept at bringing elevated ideas to life and modifying existing games precisely. I am familiar with the specific Tetris game in question and have a profound understanding of C# which is integral in making the required changes. With me, you don't just get someone who can competently modify the game, but also comprehensively integrate an AI system that amplifies its experience.
Moreover, my wide array of skills synchronize perfectly for this project. For instance, my expertise in AI implementation will ensure that the gameplay mechanics align perfectly with the desired user experiences. My proficiency in 3D Animation, VFX effect, and 2D animation will allow me to make any graphical enhancements needed to make the user interface more interactive and engaging.
Lastly, my background in developing multiplayer games enables me to ensure that your modified version is not just playable by a person against AI, but can potentially accommodate multiple players as well. Choosing me means opting to enhance your Unity game beyond expectation. Let's collaborate and transform your game into a memorable experience!