Lots of fun brain teasers mixed together with a charming little story. They don't do an amazing job with fitting the puzzles into the story (not that I'd expect them to) but they do have a few moments where it either ties in to what's happening, or a character has a personality based around puzzle types that can be pretty fun. There is a heavy reuse of puzzle types the further you get though. Even most of the bonus puzzles you can unlock are just the same ones you've done before but on "hard mode".

There's probably some kind of analysis that could be done on people based on what puzzles they find easy or struggle with.

I liked that some puzzles gave you items which were used for other puzzles. The room one was a fun way to show off character personalities, albeit one where the "rules" didn't seem consistent. The gizmo also had a neat little effect when it was completed.