“Survival Box” (*1/2 out of four) was a pretty boring horror melodrama in which seven teenagers (Boris Bilic, Michala Brasseur, Jessica Cummings, and others) are trapped in a wealthy family’s backyard bunker and have to stick together to psychologically and physically survive. Molasses pacing and dull characters make this practically unsurvivable even at only 85 minutes. Stirring music score by Sandy Nuttgens is one of film’s few virtues.