Call of Duty: Modern Warfare 2 is a real-time strategy game. It is a continuation of the first part of the series. The player takes the role of a commander of a military base, from which he sends out troops to eliminate enemy forces. It is his duty to protect the base and eliminate all attackers. 

The game includes a campaign mode, in which the player will have to complete different tasks. There is also a multiplayer mode, in which the player can fight with other players online. There is also a survival mode, in which the player can fight against computer-controlled opponents.

Call of Duty: Modern Warfare 2 also includes new weapons and perks. It is possible to use a variety of new weapons, such as machine guns, shotguns, rifles, grenade launchers, and even a flamethrower. It is also possible to use new perks, such as the one that allows you to heal your soldiers, the one that allows you to aim using your weapon, the one that allows you to use a grenade, etc.