Call of Duty: Black Ops 3 — Descent is an expansion to the futuristic first-person shooter Call of Duty: Black Ops 3. Descent features World War II-era Stalingrad, but in an alternate universe. There was a place for zombies, dragons and Nikolai and his comrades, who are desperately trying to recapture their hometown from evil spirits and infection. You will also find four maps for multiplayer: Empire — a remake of the map of the same name from Black Ops 2, Cryogen — a prison in the center of the Dead Sea, Berserk — a lost Viking village, Rumble — a battle arena for huge walking robots.
The add-on requires the original version of Call of Duty: Black Ops 3.