Nice simple game! Really liked the art style, don't really know why this game doesn't have more reviews.
It's very simple, but at the same time you added: an exit button, sound effects, a control guide IN-GAME, etc etc. I know it sounds like basic stuff, but I wanted to point all of that out because sometimes the most ambicious games forget all of these core features! and get lost implementing other stuff..
I'm sure that with more time the game could have become more complex, but I think it's cute, simple and fun as it is. Congrats with this one! Hope you get more ratings before the time ends :)