One of our favorite modes of Call of Duty: Ghosts was certainly Extinction, a highly addictive Horde-esque mode that allowed players to battle through an increasingly difficult alien infested town in one go. Obviously Activision and Infinity Ward have realized its popularity and have made it a centerpiece of the upcoming Onslaught DLC. A new trailer was released today that showcases Nightfall, the first episode of the new Extinction story arch.

Nightfall will move the action to Alaska where an alien sample from the events in Colorado is contained before it becomes, well, uncontainable. The trailer, seen below, explains the story and showcases the new enemy types in the mode.

Nightfall will release with Onslaught, first on Xbox on January 28.