Great idea.
I got stuck on most levels. Sometimes I thought the game broke (for example when the screen went completely black). Some mechanics I really like, for instance using sliders as elevators was an "aha!" moment for me. Other mechanics are not really intuitive, like getting smaller by standing on the zoom slider. But overall it's a great, inventive, and well executed game.
My only real complaint is that platforming is too hard for a puzzle game. And sometimes I wasn't sure if I can physically make the jump or do I need to figure out something smart.