Call of duty was first then came the rest untill call of duty 4
Because next was world at war
After a year it came back
And it was black
And the companies sledgehammer treyarch and infinity ward
Came up with alot more
Such as modern warfare 3
Which started collectively
Now to the new ones such as advanced warfare
Players wouldn't stop playing just to care
Exo movements
New improvements
Now black ops 3 where your the weaponry you have loyalty
But the weapon is not a part of you because it fights back
And in november call of duty turns black