Modern warfare.

Good multiplayer.
Amazing spec ops
Amazing campaign and the last challenging campaign on vet.

Black Ops 2, I started playing the series with MW2. Having good hopes AW will take the #1 spot.

Call of Duty 4: Modern Warfare

It is magical, the online was so damn good.

Call of Duty 4 by far. I think Black Ops 2 is the runner-up.

Was kind of wondering this myself, the only CoD game I have ever played is black ops and it's also my first FPS multiplayer experience and I loved it. So I was thinking about getting another one, maybe more for the multiplayer, wondering if Black ops 2 would be a good option?

COD 4: modern warfare. Got me hooked for 2 years straight, I even got over 100k kills.

Not Ghosts! I don't like Ghost very much. I love Black Ops II so I say Black Ops II

COD4 is one of my all time favorite games. All of the other ones were ok or barely above average in my opinion.

This may be the first time we have ever agreed on anything, haha

Though I like World at War MP the most, CoD4 was not far behind. But CoD4 SP is by far the best SP, then CoD2, then W@W.

So give me CoD4.