Great work! And nice implementation of the game jam theme. While I do agree with some of the other comments that it would be nice to have more levels, it was still impressive that you got this many done in 10 days. I also did a puzzle game, and once I implemented the functionality of the gameplay, I barely had time to make more puzzles. That really is the hardest part. Great work! Oh, and keep working on this. It's really cool.