Elden Ring, Dark Souls or Demon Souls

Development for the game started shortly after the release of Black Ops III. Treyarch chose not to create a campaign mode for the game at the beginning of development, instead putting all of their focus on the multiplayer aspect. They cited an increased interest for multiplayer and lack of time spent by the playerbase on the campaign mode as reasons why they shifted their focus. Black Ops 4 utilizes Blizzard's Battle.net platform for the Windows version instead of Steam, the first game in the series to do so. Teasing of the game began in March 2018, with a full reveal taking place later in May. Two betas were held for the game; one for the multiplayer in August and one for Blackout in September. The release date was moved up to October instead of the series' usual November in an attempt to avoid coinciding with the release of other high-profile games.

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Pre-release reception of the game was negative due to the game's lack of a campaign mode and the Black Ops Pass, a season pass that distributes downloadable content (DLC) in the form of "Operations". Black Ops 4 received positive reviews upon release, with praise towards its three modes, particularly Blackout, while it received criticism for the game's lack of a campaign mode and the design of its microtransactions implemented in updates. Despite physical retail sales for the game being the lowest in the series in a decade, it was the best-selling digital launch in Activision's history, surpassing 2017's Call of Duty: WWII.[2]