I love your game! It feels SO polished, and I could totally see it on steam or the app store. A quick idea to make it into a full game would be user-created levels (like in Mario Maker), or more levels and cards. Anyway, here's my arcade game: https://itch.io/jam/gmtk-2019/rate/462728. It has pretty few ratings, but I'd love to hear any feedback you have! :)