This was a whole buncha fun! I appreciate that this is just in prototype mode, so I'm fully expecting you to be implementing most of the suggestions I made (a level-based system, the possibility of failing a level, tasks to be completed on each level to pass it and so on).
I'll be keeping a very close eye on the development of this one, this concept has bags of potential to be challenging, fun and addictive! Keep up the awesome work! =)