Gears of War is a military science fiction third-person shooter video game. The game focuses on the troops of Delta Squad as they fight a desperate, last-ditch attempt to save the remaining human inhabitants of the fictional planet Sera from a relentless and seemingly unstoppable subterranean enemy known as the Locust Horde. The player assumes the role of Marcus Fenix (but can also play as Dominic Santiago), a former prisoner and war-hardened soldier. The game is based on the use of cover and strategic fire for the player to advance through the scenarios; a second player can play cooperatively through the main campaign to assist. The game also features several online multiplayer game modes for up to eight players. Story: Gears of War takes place on the planet Sera. A liquid called Imulsion became a highly valued power source after a scientist discovered how to use it, and the economic shockwave led to several wars between nations. The Coalition of Ordered Governments (COG) originally existed only as an obscure world-government philosophy, but it evolved into a legitimate, though minor, political party during the 79-year-long Pendulum Wars. The Soldiers of the COG are called gears. After "Emergence Day," when the Locust began their attack on humanity, the COG were the ones who took the necessary steps to ensure the survival of human civilization, instituting martial law and taking charge of the effort against the Locust. Fourteen years later, the COG is the only human government left on Sera. One year after E-Day (or emergence day) after a losing battle after battle against the Locust, the COG made the greatest sacrifice using the Hammer of Dawn on Human cities giving the citizens of Sera only three days to evacuate to the Jacinto Plateau, the only place Locust couldn't dig through before pushing the proverbial button on the hammer strike. Titles: Gears of War Gears of War 2 Gears of War 3 Gears of War: Judgment