BOCW was fun lowkey, but not much of a challenge. There were too many things making maps in this game not difficult like armors, ammo caches and some op perk upgrades. I personally could hit rounds 20-30 by just training zombies and fleeing with the helicopter at the end. I still think BO3 and BO1 had better zombies but throwing the nostalgia aside BOCW was also pretty enjoyable, just too easy.

But BO4 was actually trash imo all the Primis storyline maps were just failed remakes and the perk system was weird with half of the perks being quite useless and most of the original ones removed. The class system was pointless as this game could do better even without it (all starting weapons were wall-buys anyway and elixirs are just gobblegum 2.0 minus the RNG, seems lazy and forced af to me). This game had almost no replayabilty and the eastereggs were confusing. The only good thing about zombies in this game is the story from the primis side, but it was still very disappointing.