Their head normal yay! :D
I really liked how clean the design of this was, both the cute graphics, the clear mechanics and even the transition! It felt great, and like something you would find with tonnes of downloads on the appstore!
As some other here have mentioned it would be great with some harder levels, and with they way you gradually introduced new mechanics, I believe you could introduce more difficulty in a great way!
Lastly just love the design of the main guy with the dented head hahah, great job!