Im flying through this game and cant wait for more levels. Id like to have some elements that give the game a better replay value, like stars or points based on using the least amount of items (like Angry Birds), and an undo button limited to your last move would be great for when you accidentally tap your finger somewhere. You guys could also capitalize on some "pay to win" items as levels get more challenging, where less intelligent users can purchase items to help them beat the level. Keep it up!