Labyrinth 2: Labyrinth games are the first titles any tilt-enabled gaming device gets. The earliest jailbreak games were little put-the-ball-in-the-hole gimmicks, and looking back even further, when the first accelerometer-enhanced Gameboy title shipped back in 2001, it was basically a big Kirby labyrinth game. That said, this dead-simple gameplay metaphor is really addictive, and Labyrinth 2, with unecessarily great graphics, dozens of creative little twists on the core concept, and effectively infinite gameplay time, is well worth the five dollars for anyone who's ever enjoyed an iPhone marble game.