I always liked these kind of games, but honestly this is kinda disappointing...
Without a leaderboard of my own, or even a worldwide highscore, it feels useless playing again, because there is just no reason.
Things this game could improve:
- add sounds
- add a leaderboard
- make the UI a real grid and not columns (I dont even know why its layouted like that???)
If you add more features, I will be happy change my review :)