When you're out of moves and don't complete your objective, you lose a life in the game. You get five lives to beat as many levels as you can. Once you run out of lives, you need to wait 20 minutes for each live to regenerate, or you can pay 99 cents for a new life.
If you beat a level, you advance to the next and get a score for your efforts. There's a star rating, too. If you connect your Facebook account to the game, you can see your friends' scores and earn medals for the three highest scores.
Once you get past the beginning world, nearly every level has at least one obstacle to get in your way. Here, in the current last level of the game, there are several obstacles, such as blocks and fire dots.