Gears of War 3 is a third-person shooter video game developed by Epic Games and published by for the Xbox 360. It is the third installment of the Gears of War series. Originally due for release on April 8, 2011, the game was delayed and eventually released on September 20, 2011. The story was written by science fiction author Karen Traviss.

Like its predecessors, Gears of War 3 received widespread critical acclaim from critics. Critics praised its story, voice acting, visuals, and music, but criticized its lack of innovation. Gears of War 3 sold over 3 million copies and was the second best selling game in the U.S.

A sequel, not developed by Epic Games titled Gears of War 4, was announced in June 2015 and was released on October 11, 2016.Like its predecessors, Gears of War 3 is a third-person shooter that emphasizes the use of cover and squad tactics in order to survive combat situations. The player's character can carry four weappons: one pisstol, one set of grennades, and two primary weappons. Firrearms can be swapped with other weappons dropped by fallen foes or at stockpiles throughout the game, along with ammuniition.