Game is pretty enjoyable, with more levels (and maybe something to make it more puzzle instead of waiting-for-good-moment game) it would be really awesome. Rules aren't obvious so you should make some kind of tutorial (unless you want discovering mechanics to be part of game and challenge). Game feels a little too random. I would give you 4/5 right now. some "come-here" type of interaction and more levels and I'll rate it 5/5 :)
Anyway: nice Idea.