What would make you keep playing a 1v1 block puzzle?

I built TBlock Duel, a free block puzzle where you and your rival get the exact same pieces on separate boards, so skill decides. You can try it in your browser (no download) at https://tzeeyhstudio.itch.io/tblock-duel or on Android. I would love honest feedback: how was the first two minutes, did the AI feel fair, and what would make you come back tomorrow?