The twelfth major installment in a bestselling shooting game series from Activision company, existing as a direct sequel to the previous editions of the series authored by Treyarch Studio. The story is set 40 years after the events in Black Ops II, in a world reigned by chaos, where climatic changes, diminishing natural resources, and ideological divisions in the society are the leading problems. Under such circumstances the NDI system, a gigantic mental network, is created, allowing for unprecedented coordination of military troops all around the world. The player assumes the role of a member of a military squad who has somehow lost contact with their base. Right after what seems to be the biggest government data leak in history has occurred. In terms of mechanics, the game offers more open map structure and cooperative gameplay in campaign mode. The biggest changes, however, were introduced to multiplayer, where a 9-class system was introduced.