Angle, power, fire. A pirate monkey aims a cannon at tiki towers built from blocks, barrels and stone, and every piece of them obeys real physics, so the shot that wins a level is usually the one that takes a support out from under the rest rather than the one that hits the most. Two hundred levels across ten islands keep changing the conditions — ice that slides, wind, low gravity, platforms that move — and the three-star rating is for finishing with cannonballs to spare.