COME SLAY WITH US 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 centre 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. More Cooperative Story Campaign Fight your way through dynamic, perilous world in a 4-player co-op story campaign where you must work together to survive increasingly challenging missions.  Play with up to 3 of your friends online or go solo and lead your team in battle. Competitive Multiplayer Play with or against friends in PVP. Switch between playing as Cleaner and the horrific Ridden.  Both sides come with unique weapons, abilities and perks. Extreme Replayability A New "rougue-lite" Card System creates different experiences each and every time, putting you in control to craft custom decks, roll different builds and undertake more demanding fights.  The Game director is constantly adjusting player actions, ensuring exciting fights, extreme gameplay diversity, and tougher legions of Ridden - including mutated boss types up to 20 feet tall