Would have to be MW3. Don't know why I like it so much, since I know it's not the best out of all the call of duties. I guess It's the game I placed the most with my friends, and I just started loving it. I have over 40 days played on Mw3, and can't say I regret any of it. Maybe going out with my friends a little more, but that's about it.

I have played the most on Black Ops 2, however I would still probably be playing COD 4 if it wasn't for all the hacked lobbies and hacks.

I don't play much of CoD anymore just because the way it's "changed" over the years but for more it's definitely MW2 (So many good memories from that game)

My personal favorite of all time is MW2. It has everything I could ever ask for in a Cod. All the graphics, guns, maps, and camos are realistic and really make the game stand out above the others.

Mine was probably Black Ops 2, as it made me a more competitive player.

Great game.

World at War for sure.

It was my first CoD and I loved every minute of playing it. Especially the zombies.

My favourite is cod4, because it's so simple, all the guns were good in different ways, and also in my opinion it had the best campaign story.

my favorite call of duty is black ops 1

black ops 1, its the only cod i got to top prestige

Mine would be MW2 becuase I have so many good memories of that game but I usually find that peoples favorite is usually the one they first played.