Multiplayer Maps. Modern Warfare III arrives with 16 classic Multiplayer maps modernized from Call of Duty: Modern Warfare 2 (2009), in addition to three Ground War maps and a linear map made specifically for War mode.

Yes, you can play both the campaign mode and multiplayer mode in Call of Duty: Modern Warfare 3 offline. The campaign mode can be played in its entirety in offline mode, and a Private Multiplayer mode allows you to access all of the maps and modes present in Multiplayer.