It's a good start, but it needs some polish. When I started it up, of course ads loaded, and of course I started feeling annoyed and impatient. So when the ad FINALLY ended I pressed the "PLAY" button as soon as I saw it. Unfortunately, then I was confronted with an inscrutably complicated screen. I almost gave it a 0 right then, but I decided to give one more chance; I reloaded the game (and sat through the ad AGAIN), and then looked at the screen--and there were instructions. Not within the game itself or even in the description, but they WERE there. (It's kind of strange, isn't it, that you get told "Hold P to review controls" at the end of the first level...AFTER you've mastered all the controls?)
Anyway, on the second level I'm supposed to be able to push a box, but I can't, so whatever, I've spent enough time on this already.