Developer Treyarch is getting ready to say goodbye to Call of Duty: Black Ops II with one last piece of downloadable content. The studio just released a new trailer that reveals the final Zombies mode and competitive multiplayer maps in action from the Apocalypse map pack, which is due out tomorrow..

The end times-themed expansion features four maps and the Origins mode that brings the Zombies co-op storyline to a close. The multiplayer arenas include a snow-capped European resort city titled Frost, the abandoned communist utopia Pod, an Afghan archaeological site named Dig, and a floating launchpad in the Pacific referred to as Takeoff.

Origins puts players in the role of World World I-era soldiers as they  fight against zombies in a diesel-punk alternative history. Players must also avoid a gigantic mechanized robot the size of a skyscraper.

Check it all out in the trailer below:

Following the Apocalypse add-on, publisher Activision will shift all of its focus onto developer Infinity Ward’s Call of Duty: Ghosts, which will debut on Xbox 360, PlayStation 3, Wii U, and PC on Nov. 5. The shooter will also make the transition to next-gen alongside the launch of the Xbox One and PlayStation 4.