Includes: Base Game Annual Pass: Three upcoming downloadable content drops with New Story, Playable Characters, Special Mutated Ridden, and more Back 4 Blood is a thrilling cooperative first-person shooter from the creators of the critically acclaimed Left 4 Dead franchise. You are at the center of a war against the Ridden. These once-human hosts of a deadly parasite have turned into terrifying creatures bent on devouring what remains of civilization. With humanity's extinction on the line, i...