While I can technically interact with this game with my touch screen, I do think that I can't interact with it to its fullest without a keyboard, which is unfortunate. (Basically, I can divide the cows, but rapid mitosis -> can't move -> I can't progress because it loops back to the beginning after 5-10 seconds of gameplay, that is my experience.)
Besides that, found Millie immediately, love finding Millie, the sprites are really cute, and this does get pretty much top grade in the silly counter.