>>713064919CoD1, MW1, MW2, WaW, Blops 1, Blops 2, Blops Cold War AW and IW all have great campaigns, Blops 3 has an excellent story but the whole game is designed for 4 player coop so the encounter design is shit and very repetitive.
CoD2 gets a lot of praise but it feels very short and over-reliant on combat arenas that the AI doesn't play well with to me.