As of 2013, the game has sold 22.7 million copies. Within 24 hours of release, the game sold approximately 4.7 million copies in North America and the United Kingdom. Modern Warfare 2 received universal acclaim. Two downloadable content packs were released for it post-release, each containing five new multiplayer maps, with some being remastered maps from Call of Duty 4. The multiplayer mode was revealed shortly after. Teasing of the game began in March, with short trailers being released for the game and, eventually, a full reveal trailer. Modern Warfare 2 was officially announced in February 2009.

They initially tested the multiplayer mode by playing an in-house beta version of the game.

Infinity Ward was inspired by real-life conflicts when developing the campaign mode. It uses the IW 4.0 engine, an improved version of Call of Duty 4's IW 3.0. An expansive multiplayer mode is featured in the game, with several new features and modes that were not seen in its predecessor.ĭevelopment for the game began in 2008, when it was still known as Call of Duty 6. The game's main playable characters are Sergeant Gary 'Roach' Sanderson, of the 141, and Private James Ramirez, of the Army Rangers, with Captain MacTavish becoming playable later in the campaign. The game's campaign follows the Task Force 141, a special forces unit fronted by Captain Soap MacTavish, as they hunt Vladimir Makarov, leader of the Russian Ultranationalist party, and the United States Army Rangers, who are defending the country from a Russian invasion. The Xbox 360 version was made backward compatible for the Xbox One in 2018. A version for macOS was developed by Aspyr and released in May 2014.

A separate version for the Nintendo DS, titled Modern Warfare: Mobilized, was also released on the same day. It was released worldwide on Novemfor Microsoft Windows, the PlayStation 3, and Xbox 360.

It is the sixth installment in the Call of Duty series and the direct sequel to Call of Duty 4: Modern Warfare, continuing the storyline. Call of Duty: Modern Warfare 2 is a first-person shooter game developed by Infinity Ward and published by Activision.

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