A very fun puzzle game. Both theme and limitation are present and implemented in a unique way. The complexity scaled well from level to level (the last one required some restarts to finally beat for me). No bugs, no issues. Has a polish that goes beyond mere prototype and core game loop looks finished and ready to design a ton more levels. It's amazing, that solo dev designed and implemented the idea in just 10 days so flawlessly. It's easy to pick up and has perfect non-intrusive and non-restrictive tutorial, with information presented, when you need it, so it didn't require any time or effort to figure out, what to do (apart from actual solutions for the levels, which is the fun part).
Honestly, it's just very fun to play and I would've loved to see more levels. Sad to see, that dev doesn't plan to continue work on it, but it's understandable.