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Summary Update 1.0.3 for OS 3.0 is live. - - - - - - - - - - iphonegamenetwork 4.5/5: "Powerboat Challenge is an excellent step towards actually getting PSP-quality games on your iPhone, and is by far the best iPhone racing game out there!" Pimp up your powerboat and go full throttle to compete against cool dudes and hot chicks in high-...