This game's really cool. It takes a few tries to really get the hang of it, but I enjoyed it a lot. And I managed to get to fifth on the leaderboard.
Also, a lot of people were mentioning that you need to work on the graphics, however, I thought what you had in terms of graphics was pretty effective and it's easy to see what's going on after you've played it once. Also you have sounds, which a lot of people haven't had.