Such a well made game! I love the aesthetic and use of the theme. The puzzles require my preferred amount of brain power, a perfect middle ground between "solves itself" and "daunting/overwhelming". Good difficulty curve to the levels as they progress, and ways of naturally teaching new mechanics. Being able to move/remove placed tiles with the mouse would be nice, but overall that's a minor gripe, as the undo button seemed to work well. Great job!