Fun and pleasant, and a spot-on interpretation of the “Change” theme.
There were some little UI misses. I wish the whole thing were playable with keyboard, instead of requiring intermittent mouse clicks. And the error sound effect doesn’t play, and it creates an extra row at the end when one expects some kind of “poof, you’re done!” reaction. Minor points.
Where I had the most trouble was with the dictionary. It doesn’t declare which dictionary is in use, but it’s evidently one with lots of exotic words. Makes guessing difficult.