Touch Arcade: Halfbrick's games usually grab me immediately. Jetpack Joyride [Free] was the cave flier of my dreams, Fruit Ninja [$0.99] devoured my high-score hunting hours. I didn't immediately latch on to Fish Out of Water [$0.99], though. It doesn't have the same obvious hooks—the shiny coins and the upgrades that keep you hitting that play button over and over. Heck, it doesn't even have a typical high score system.