Black Ops 4 will feature a battle royale game mode called Blackout which will serve as a stand-in for the campaign mode. While utilizing the traditional Black Ops combat style, the mode includes the largest map featured in a Call of Duty title. Players compete against each other through locations appeared in previous Black Ops games. This mode will also feature land, sea, and air vehicles for players to use. The game mode features various playable characters from the entire Black Ops series, such as Alex Mason from the original game, Raul Menendez from Black Ops II, and the Primis crew from Zombies.
Black Ops 4's multiplayer features the return of Specialists, unique soldier characters with special abilities and traits. The game features a total of ten Specialists, six of which (Ruin, Prophet, Battery, Seraph, Nomad, Firebreak) are returning characters from Black Ops III, while the other four (Recon, Ajax, Torque, Crash) are new additions. It will also feature remakes of five fan-favorite maps, Jungle, Slums, Summit, Firing Range and Nuketown. Treyarch stated that the maps will be available to all players at launch except Nuketown which will follow 'shortly after'.
Multiplayer has also been reworked with various changes for more tactical and teamwork gameplay. Health regeneration is removed in favor of a manual healing system (with each player having a health bar), and weapons are now given predictive recoil patterns. Weapon customization is also emphasized, with unique Operator Mods for each weapon, allowing for deeper personalization of players' arsenals; attachments are also given tiers, with tier-2 upgrades providing even bigger improvements to the weapons.
In addition, the game includes a Solo Missions mode featuring skill-based missions that contain backstories on various Specialists in the game. The missions are set within the same narrative world of the Black Ops campaigns, between the events of Black Ops II and Black Ops III.