ZOMBIES mode was removed due to it not reaching the high quality level that we desire for all modes in Call of Duty: Mobile.

Looks Like We Have Our Weapon. \n\n For the first time in Call of Duty history, Zombies is coming to the Modern Warfare universe in Call of Duty: Modern Warfare III.

Black Ops 3 is arguably the longest Call of Duty game. Most people report finishing the main story in about nine hours, which is certainly a respectable amount of time for a first-person shooter that releases just about annually.

The longest according to players on HowLongToBeat is Black Ops 3, the campaign of which should take players around 9 hours to finish.