I suck at puzzles so some of their quality may be lost on me. That said once I looked up how this kind of puzzle works I gathered that these were probably well made, even I enjoyed them quite a bit even if I wasn't very good at them!
The robot is super cute and the animations, while simple, are just as cute. A small tutorial or informational screen for those unfamiliar with these types of puzzles, but I gather that they're common so maybe that's more on me.
In any case, really sweet work, it's well made and fun!