The game is split into three main pillars, all centered on online or cooperative play:

: Launching with three full "undead adventures"— IX , Voyage of Despair , and Blood of the Dead —it offers high replayability through "Custom Mutations" with over 100 variables. PC Features & Performance

The PC version, available through the Battle.net store , includes specific enhancements: Call of Duty: Black Ops 4 | Review

: This was Call of Duty's first major foray into Battle Royale , featuring the largest map in franchise history at launch. It blends signature Black Ops combat with land, sea, and air vehicles.

: A "boots-on-the-ground" experience featuring Specialists —unique characters with game-changing abilities like grappling hooks or medical boosts. It introduces manual healing and predictive recoil for a more tactical feel.