From the creators behind Left 4 Dead, comes a co-op zombie survival shooter that throws you into the middle of huge hordes of zombies and mutants.Back 4 Blood is a nerve-wracking cooperative shooter from the creators of the critically acclaimed franchise Left 4 Dead.Experience the intense narrative co-op campaign with 4 players, competitive multiplayer as human or Ridden and the hectic gameplay that keeps you constantly focused.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.Co-Op Campaign: Fight your way through a dynamic and dangerous world in a four-player narrative co-op campaign. You must work together to survive missions that only become more challenging. Play with up to 3 of your friends online, or go solo and lead your team in battle.PVP Mode: Play with or against friends in PVP. Become a Cleaner with unique advantages, or change sides, and play as the terrifying Ridden. Both sides have unique weapons, abilities and specialties.