No there is no cheats but there is glitches
There is no cheat codes for Call of Duty Modern Warfare 3.
Yes, there is online multiplayer on Call of Duty 4: Modern Warfare.
no there not ive tried
you cant
Have a look on somewhere like gamespot, theres plenty available online!
Call of Duty World at War, Modern Warfare, Modern Warfare 2, Black Ops, and Modern Warfare 3 all have online multiplayer.
you hack dumbbutt
No,you need to mod it.
yes
Modern Warfare 2 is a better game if you are going to play online.
there are cheat on COD MW2 if you go to GameSpot.com you will get the cheats
yes it is a lvlhack, but when you use it you can get BANNED