Developed for over two years, the game uses a proprietary game engine. The game breaks away from the World War II setting of previous entries in the series and is instead set in modern times. An installment in the Call of Duty series, it was released in November 2007 for the PlayStation 3, Xbox 360, and Microsoft Windows, and was ported to the Wii as Call of Duty: Modern Warfare – Reflex Edition in 2009.

Call of Duty 4: Modern Warfare is a first-person shooter developed by Infinity Ward and published by Activision.