Call of Duty 4: Modern Warfare is the first Call of Duty installment to take place in a contemporary setting instead of World War II. It was announced on April 12, 2007 and was released on November 5, 2007.
Call of Duty 4 was published by Activision and developed by Infinity Ward, and is available on the PC, Macintosh, Xbox 360, and the PlayStation 3. A Wii version of the game, called Call of Duty: Modern Warfare: Reflex Edition, was handled by Treyarch, and was released on November 10, 2009 along with Modern Warfare 2 for Xbox 360/PS3/PC and Modern Warfare: Mobilized for Nintendo DS.
The game is followed by 2 direct sequels, Call of Duty: Modern Warfare 2 and Call of Duty: Modern Warfare 3.