Gears of War 2 is a third-person shooter video game developed by Epic Games and published by Microsoft Game Studios. It was released exclusively for Xbox 360 on November 7, 2008. It is the second installment to the Gears of War franchise. The game focuses on the continued war between the COG and the Locust Horde, who are attempting to sink every city on planet Sera. Delta Squad, led by Marcus Fenix, must stop the Locust by traveling to the depths of the planet. The player controls Marcus Fenix during the single-player campaign,and the option to play cooperatively with a friend as Dom Santiago is available. A new feature for multiplayer is "Horde" mode, which challenges up to five players against waves of Locust forces with always-increasing strength.
The game received widespread critical acclaim. It sold over two million copies on its weekend release, and four million within two months. It was the seventh best-selling video game of 2008, and received many awards. The new gameplay and multiplayer modes were seen as outstanding additions, building upon the already-mega-success of the first game.