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, it~s up to you and your friends to take the fight to the enemy, eradicate the Ridden, and reclaim the world.