Call of Duty - Modern Warfare 3 (USA) (v1.20) (Disc) (Update) is a first-person shooter video game developed by Infinity Ward and published by Activision. It is the eighth main installment in the Call of Duty series and the third installment in the Modern Warfare sub-series. The game was released in November 2011 for Microsoft Windows, PlayStation 3, and Xbox 360 and has since had multiple downloadable content packs released.

The game follows the story of the previous Modern Warfare games, where players take the role of a variety of characters in a fictional conflict between the United States and Russia. The game features a variety of single-player and multiplayer game modes, including a cooperative mode. The game also features a variety of weapons and vehicles, as well as improved graphics and sound.

The game is played from a first-person perspective and players have the ability to use a variety of weapons, as well as use hand-to-hand combat. Players can also use various vehicles, including tanks and helicopters, to traverse the game's environment. The game also features an improved artificial intelligence system, allowing enemies to react to the player's actions in a more realistic manner.

Call of Duty - Modern Warfare 3 is available for download on Romsbase.com, with a variety of roms and game files to choose from. The game is also available on disc for PlayStation 3 and Xbox 360. The game has received generally positive reviews from critics and is one of the best-selling video games of all time.