Listen, I love a few games, but Black Ops was my favourite game. I may be biased (cuz it was my first game that I actually owned) but it reinvented zombies and the story was pretty awesome. It's online was so much fun too. It's a very well-rounded game. Modern Warfare 2 is all of my friends' favourite game, and tbh, the Modern Warfare series has the best Cod story because it spans over 3 games (now 4 games I guess since the newest MW is a prequel to it all) and was just full of twists and turns. It was done very well, and Modern Warfare 3 was a lot of fun and survival was highly underrated.
Call of duty ghosts
Black ops 3 cuz zombies
Black ops 1 easy
Black ops 2 it’s the best hands down