Gears of War 3: Raam's Shadow (360) vs Singularity (360)

RAAM’s Shadow adds more than three hours of campaign gameplay, featuring missions on both sides of the Locust War. As the COG, play as the veterans of Zeta Squad: Tai, Minh, Valera, and Barrick. As the Locust, you are the fearsome General RAAM with all new executions and the power of the Kryllstorm. Also included are 250 Gamerscore, the Chocolate weapon skin pack, and six new character skins for Versus multiplayer.

Singularity is a video game developed by Raven Software to be published by Activision and released for Microsoft Windows, Xbox 360, and PlayStation 3. The game takes place on a mysterious island known as "Katorga-12" where Russian experiments involving "E99" took place during the height of the Cold War era. Sometime during 1950, a terrible catastrophe known as the "Singularity" occurred on the island, causing the island's very existence to be covered up by the Russian government. The player controls Nate Renko, a Black Ops soldier who is sent to investigate bizarre radiation emissions coming from the island, only to crash land there. After regaining consciousness, Nate finds the TMD (Time Manipulation Device) and discovers that the island is constantly shifting between the time periods of 1950 and 2010. He also encounters Victor Barisov, the scientist in charge of the Katorga-12 experiments who reveals that a man named Nikolai Demichev is on the island to try to restart them on a much larger scale, which could cause an unthinkable disaster. During the quest to stop Demichev, the player will have to deal with hostile Russian forces in both time periods, and the hideously mutated flora, fauna and former residents of the island, some of which have developed time manipulation powers of their own.