Call of Duty: Black Ops 4 Zombies was a bit of a mess, but below all the problems, there was some brilliant content to enjoy. Though crashes and bugs ensured that the mode got off to the worst possible start, promised features like Factions in Zombies never came to be, and the community despised the perk changes and HUD design, some of the maps were excellent. Thanks to some datamining, players now have a reason to return to the game, as some very well-hidden secrets are being discovered on said maps.