Call of Duty: Modern Warfare 2 (also referred to as simply Modern Warfare 2 or Call of Duty 6) is a first-person shooter video game developed by Infinity Ward and published by Activision for Microsoft Windows, PlayStation 3, and Xbox 360. Officially announced on February 11, 2009, the game was released worldwide on November 10, 2009. It is the sixth installment of the Call of Duty series and the direct sequel to Call of Duty 4: Modern Warfare, continuing along the same storyline. It was released in conjunction with two other Call of Duty games: Call of Duty: Modern Warfare: Mobilized for the Nintendo DS, and Call of Duty: Modern Warfare: Reflex, a port of Call of Duty 4 adapted by Treyarch for the Wii console. In addition, a comic book series based on one of the game's characters will also be produced, entitled Modern Warfare 2: Ghost.
The game takes place five years after the previous installment. Gameplay is divided between the multinational counter-terrorist group Task Force 141, who are trying to eliminate Vladimir Makarov, and the US Army Rangers, who are defending against the Russian invasion of the United States. Several settings for the game include Afghanistan, Rio de Janeiro, Siberia, and Washington D.C.
Call of Duty: Modern Warfare 2 received highly positive reviews from various gaming websites and has received high praise for its in-depth multiplayer. Upon its release, Modern Warfare 2 sold approximately 4.7 million copies worldwide in 24 hours