On Apple's devices, the game no doubt owes much of its success to how well-suited it is to touch controls. The player launches cannonball-like birds from slingshot catapults at rickety castles in an attempt to bring them down. The trick to it is using your finger to drawback the shot at just the right tension and angle to get the desired trajectory. Translating this intuitive sense of launching the birds to the traditional controls of an analog stick and buttons poses a challenge for the port.
The Minis version of Angry Birds will include four worlds—featuring a new 4th world, "The Big Set Up"&mdash with over 120 levels, a bonus Golden Egg World, and a new "big brother" bird.