Why it stood out: Thanks to the billion or so Tetris copycats cluttering the smartphone market, it's difficult for truly worthy imitators to stick out from the stacking-puzzle pack. Bag It! bucks this trend, though, by turning a totally mundane task bagging groceries into a fast-paced, personality-packed puzzler that guarantees you'll never again make the mistake of placing the canned goods on top of the bread.