The co-op shooter Back 4 Blood was touted as a spiritual successor to the Left 4 Dead series, but it sadly wasn't able to meet the high-quality bar of its predecessors. Although it was developed by the same studio behind L4D, Turtle Rock Games, Back 4 Blood was met with somewhat mixed reviews upon its release. The game did have its highlights, but it was criticized by many for its map design, difficulty scaling, limited content, and perceived lack of innovation. Despite its divisive critical reception, Back 4 Blood was still able to attract a sizable audience. Only two weeks after its October 2021 launch, it garnered a total of 6 million players across all platforms, which was quite impressive.