Yes you can but it is a series
Not really. The campaign will still not make sense, even if you played the first Modern Warfare.
No
Yes, a keyboard is necessary to play Modern Warfare 2 on PC, however you cannot use a keyboard to play Modern Warfare 2 on PlayStation 3 nor Xbox 360.
modern warfare 2 is the sequel to the first mw and the reflex is the first modern warfare but a wii version
It not a part of Call of Duty Modern Warfare 2
Call of Duty Modern Warfare came before Call of Duty Modern Warfare 2
None. the first ones are in Modern Warfare 2.
Go to the main menu and select Multiplayer... Then Play Online...
No they are two diffrent games.
Yes, it's on ds which you can play on dsi, it is calledCall of Duty: Modern Warfare Mobilizedf
Depends which modern warfare game you mean if its the first one you cant play co-op but on modern warfare 2 you can play with another person but only on special ops. You will need to get a second controller, use system link or play with people online(Xbox live/PSN).
The Call of Duty Reflex Edition was the first Modern Warfare game for the Nintendo Wii and is not a Call of Duty Modern Warfare 2 although it was released at that time