Great game, fun mechanics, lovely graphics and fun narrative!
I really liked that I could sometimes beat a puzzle with unused pieces. That made me feel really "smart" at times haha. I also love how everything interacts with each other, gives it that emergent kind of feel. Also, the hints are awesome, a great addition to any puzzle game I reckon!
The cutscenes at the beginning of a new 'world' become quite lengthy when you have to sit through them when you keep dying in those levels. I sometimes got stuck because of the fan's air current width, it seems a bit bigger than the graphic shows, but restarting is quite quick luckily :)
I'd love to see you build upon this with more levels and possibly different ways of winning stages! I'd be hooked