Oh to be a sheep rolling around all day... anyway, I can't give much feedback in regards to the mechanics of the game itself since I am by no means a programmer. But at least I can give you some opinion from an English teaching major student who just went to this game jam to draw...
The graphics were beautiful. The simplicity, colour palette. The design of the sheep was amazing. I loved the music, it kept me intrigued. The dificulty of the levels progressed gradually, which was really great. I was sad to see that the game has ended so fast (and yes, if this was a mobile game, I would buy it).
So overall, incredible. The only small mistake I have to (and the only one I can) point out is this - 'sheep' is uncountable (unless it was some joke I didn't get), sorry, habits of a language teacher. I can't complain about anything else since I understand as much about comuter gaming as my grandma.:D But beautifully done.