"Call of Duty: Black Ops III-Descent" expansion will be launched today for PC and Xbox One 10AM PT. The expansion that includes robots and dragons will feature four multiplayer maps Empire, Rumble, Cryogen, and Berserk.

One of the highlights of the "Call of Duty: Black Ops III-Descent" expansion will be Gorod Krovi, the Zombies chapter, Gamespot reported. It will take place in post-war Stalingrad following the Zetsubou No Shima events. Post-war is the DLC's last chapter featuring robots and dragons.

"Call of Duty: Black Ops III-Descent" is $15 for Xbox One; however, it is also available with the "Call of Duty: Black Ops III" $50 season pass. PC players and Xbox One had to wait because Sony and Activision has a time exclusive deal, announced initially during the E3 2015.

Meanwhile, other "Call of Duty: Black Ops 3" DLC 4 expansion pack is expected to provide the final installment in the long running zombies storyline of the game. It is the fourth downloadable content (DLC) to be released by developer Treyarch.

Treyarch's senior executive producer Jason Blundell hopes that the "Call of Duty: Black Ops 3" DLC 4 expansion pack will resolve old cliffhangers as they wrap up the story up to its conclusion, Windows Central reported. Aside from that, Blundell said that more content will be packed in the upcoming DLC.

The content of "Call of Duty: Black Ops 3" DLC 4 is tightly kept a secret for now as the developer maintain a working environment that is not only secretive to outsiders but also to their workers within the company. Blundell shared that for the last DLC, only him, the gameplay director, and the lead writer of DLC 4 are working on the project. It is their way of avoiding any content leaks until they are prepared to release it.

"Call of Duty: Black Ops 3" DLC 4 received a level of unhealthy paranoia according to Blundell. He expressed how limited is the information he can share because he is tight-lipped about it even in Activision. Watch official "Call of Duty: Black Ops III - Descent" multiplayer trailer here.