Cod 2 was the big red one or what ever right one of my friends used to talk about it. I liked all the cods until mw3 it wasn't bad it was just boring and ghosts which is trash I'm mad I even bought it. I did legitimately really enjoy every other cod. Cod 4 was my first waw introduced me to zombies and I loved it. Mw2 turned me into a -blam!-ing stone cold killer with the art of quick scoping I loved that shit. Bo1 more zombies with a great fun competitive. Bo2 even more zombie insanity and a refined and fine tuned multi player bo2 was my favorite.