Episode 1: Nightfall - the first instalment in Extinction's four-part episodic narrative
At a remote facility in the Alaskan wilderness, the shadowy Nightfall Program has been researching the origins of the "Alien" threat. When the scientists lose control, a small team of elite soldiers must retrieve the intel, exterminate hordes of hostile creatures and survive a three-story tall terror unlike anything they've faced before.
Episode 1: Nightfall is included with Onslaught, the first DLC for Call of Duty: Ghosts. Onslaught comes to Xbox LIVE on 28th January, with other platforms to follow.