yu cant only in mw3
You cannot.
You can't, modern warfare 2 has only one player online but it has splitscreen which is only local play.
There is no two player online for mw2 on ps3 or xbox 360
No
No, but you can play 2-player online in Special Ops.
No. The only time to play NPCs is in the Single Player mode and in the Spec Ops.
and strings
$5 a day
No, it is free to play online.
No
No.
Play online
of course.