A rumor yesterday, an official trailer today: it's the new co-op mode for Call of Duty: Ghosts. We'll be shooting aliens.

Activision says: "Call of Duty: Ghosts introduces Extinction - an all-new 1-4 player cooperative game mode featuring a unique blend of fast-paced survival action, FPS base defense, scavenging and class leveling..."

To contact the author of this post, write to stephentotilo@kotaku.com or find him on Twitter @stephentotilo.