Left 4 Dead dev Turtle Rock returns to cooperative zombie shooting with Back 4 Blood

Warner Bros. Interactive Entertainment and developer Turtle Rock Studios announced Back 4 Blood today, a new cooperative zombie-based shooter.

Turtle Rock Studios created Left 4 Dead, a zombie co-op shooter that came out in 2008 and sold millions of copies. The developer then released Evolve in 2015, a multiple shooter that had a team of four hunters take down one monster, all controlled by real players. It did not have as much success as Left 4 Dead and would go on to a free-to-play model.