Fantastic puzzle design. Each puzzle is the perfect combination of simple yet challenging in the best way possible. I was able to visualize the solution in my head before executing, which is a quality I like in a thinky puzzle game. The execution itself was smooth, intuitive and unsurprising, which is great. Each puzzle focuses very tightly on a specific and novel phenomena of the ruleset, which kept things interesting. The visual design is cute and highly readable. The last puzzle is a super satisfying conclusion. No solution ever felt like I was cheating the system in any way. Solving the puzzles made me feel smart. The music is charming yet unobtrusive. 5/5 all around.