Aliens rip the bloody hell out of gangbangers in the London projects. Done on the indie cheap with untold riches in ballsy imagination, this knockout creature feature busts the Hollywood chops of Cowboys & Aliens. It’s hot, fierce, funny, vicious and ready to bite, baby. Attack gets its teeth from writer-director Joe Cornish, in a smashing debut. Keep an eye on John Boyega, 19, a fireball with serious acting skills. He plays Moses, the leader of a gang that mugs a nurse (Jodie Whittaker) and ends up the block’s only chance against furry aliens with DayGlo chompers and startling symbolic heft. OK, no more spoilers. This movie wants and needs to come at you like a beast in the dark. Allow it.