While Treyarch is getting flak for developing Call of Duty: Black Ops 4 as a multiplayer-only title, statistics show that the decision could be justifiable. According to numbers gathered by TrueAchievements, few players are invested in the series’ single-player story modes. The participation for the original Black Ops averaged 25.44% with the second game peaking at 27.13%. The third game averaged a paltry 4.14%, though to be fair this game's achievements are a bit different and require you play on higher than regular difficulty to unlock most of them. Still, the story completion achievement, which pops regardless of difficulty, sits at under 9%.