Well constructed puzzles and a really cool mechanic+visual effect with the slime splashing around! I really liked that each level was quite short and gradually became more difficult in a nice way, so that when you died you never had to redo a bunch of stuff just to get back where you were. It felt challenging in a casual way, but not frustrating. The voice over could have used subtitles during the explanation in the beginning, just to make it even easier to follow along. Really well done!