Call of Duty allowed players to advance through World War II in a series of campaigns or to battle it out against human opponents in its multiplayer mode.

Call of Duty 4: Modern Warfare features team-based and deathmatch-based multiplayer modes on various maps. Each mode has an objective that requires unique strategies to complete.

Just Spec Ops, and it's 2 player coop. No Coop campaign.

Call of Duty: Black Ops 2 Co-Op Review - Page 2. The campaign is only one piece of the Call of Duty: Black Ops 2 triangle this year. The other two are Multiplayer and Zombies. Zombies is actually where the co-op is at, but we'll briefly touch on multiplayer.