Call of Duty: Black Ops 4 is a multiplayer first-person shooter developed by Treyarch and published by Activision. It is a sequel to the 2015 game Call of Duty: Black Ops III, the fifth entry in the Black Ops sub-series, and the 15th installment in the Call of Duty series overall.

MULTIPLAYER:

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 arrive in November.

ZOMBIES:

Zombies returns as the cooperative multiplayer mode for Black Ops 4. The game mode features a wider range of customization, allowing for more personalized play styles. Mechanics of the game can be customized via "Custom Mutations", which include over 100 variables, such as overall difficulty, zombie speed, health, damage, and more. Time-limited events known as "Callings" are also promised to be included in the game for long-term engagement. Similar to the Nazi Zombies mode in Call of Duty: WWII, custom loadouts are included to allow players to select different starting weapons, equipment and special upgradable weapons, as well as perk selection to be available in each match. A new game type, Rush, is introduced into Zombies, where the players build up points and multipliers and compete against one another for the highest point possible until death.

BLACKOUT:

Black Ops 4 features 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.