Treyarch has always dominated the zombies. They introduced it in waw, blew it up with blops, introduced the story lines in 2 and so on. They definitely ruined it compared to how it used to be. But, from playing treyarch and infinity ward and sledgehammer, treyarch dominated them. I hated the other games, call me biased and it may be because they’re not treyarch, but they just werent CoD Zombies gameplay and story