Tanks aren't cute, as a rule. They're hideous, ungainly death-machines, designed to weather the ravages of trench warfare - proof against bullets and emotions alike. You're not supposed to want to cuddle them. You're not supposed to want to take one home and pet it, like a mislaid hamster. Yet somehow, that's exactly how I feel about the lumbering cast of World of Tanks, Wargaming.net's colossal free-to-play tactical shooter, which makes its debut on Xbox 360 later this summer.