"Gears of War is an award winning, bestselling science fiction video game franchise, created and owned by Epic Games and published by Microsoft Game Studios. The two games that currently make up the series take place on the fictional planet Sera and focus on a war between humans and creatures known as Locust. In Gears of War, the protagonist Marcus Fenix, a soldier or "Gear" in the Coalition of Ordered Governments, leads his squad on a mission to deploy the Lightmass bomb and destroy the Locust Horde in their underground strongholds. The sequel Gears of War 2 takes place six months after the events of the first game, and follows Delta Squad and the COG army as it launches an assault directly against the Hollow in an effort to end the war."
Source: Wikipedia, "Gears_of_War_(series)", available under the CC-BY-SA License.