It is the sixth installment in the Call of Duty series and the direct sequel to Call of Duty 4: Modern Warfare.

Call of Duty: Modern Warfare 2 is the sixth main Call of Duty game, and the fourth developed by Infinity Ward. The game was published by Activision for the PC, PlayStation 3, and Xbox 360. Officially announced on February 11, 2009, the game was released worldwide on November 10, 2009.