Gears of War 2 is a tactical third-person shooter video game developed by Epic Games. It was published by Microsoft Game Studios for Xbox 360. It is the sequel to Gears of War, and was announced by lead designer Cliff during the February 20, 2008 Game Developers Conference. The game uses a heavily upgraded version of the Unreal Engine 3. During E3 2008, a worldwide release date for the game was set for November 7, 2008. Since its release, Gears of War 2 has been received with critical acclaim, and in its opening weekend the game sold over two million units.
In Gears of War 2, the Locust have found a way to make giant emergence holes capable of sinking entire cities at once. Marcus Fenix and the rest of the COG Delta Squad are now drilling underground to "take the fight to the Locust." In a teaser of the first scenes of gameplay of Gears of War 2, COG soldiers engage in battle with a large army of Locust as they travel to drill into the underground region. Comic book writer Joshua Ortega says, "The stakes are raised. This is humanity’s last stand. Everything is at risk. Nothing is safe."