Call of Duty: Modern Warfare 2 refers to two different games: the iconic 2009 original (sequel to CoD 4) and its 2022 reboot/sequel within the 2019 Modern Warfare timeline, both intense first-person shooters featuring Task Force 141, global conflicts, and extensive multiplayer, with the 2022 version offering updated graphics, AI, and Gunsmith. The 2009 game is known for its controversial "No Russian" mission and classic multiplayer, while the 2022 edition brought modern gameplay innovations and cross-platform play.