The tetris engine itself is nicely made and seems to work flawlessly, so great work on that. However, there is no sound or music whatsoever, which is a problem. Also it just seems like tetris but with cat faces on the pieces... I was expecting there to be some new spin on the game, not just a minor graphical difference. I don't want to be discouraging, this is a nice little project, but it seems more like something you just made to experiment with using a new IDE.