Escalation is a downloadable content pack (DLC) for the 2010 game Call of Duty: Black Ops. It includes four new multiplayer and one new zombie map: - Zoo (takes place at an abandoned Soviet zoo) - Convoy (takes place near an abandoned convoy containing a big missile) - Hotel (takes place in a resort in Cuba) - Stockpile (takes place in a small village in Russia, with one of the houses containing a stockpile of weapons) - Call of the Dead (the zombie map, taking place in an abandoned Siberian outpost near the coast)

Escalation contains 5 all-new maps; featuring 4 Multiplayer maps and an epic, star-studded Zombies experience with new playable characters. Battle it out in 'Hotel' on the roof of a luxury hotel & casino in old Havana; 'Convoy' delivers close-quarters combat near an ambushed US military convoy; 'Zoo' takes you on a wild ride in an abandoned Soviet Russian Zoo; 'Stockpile' is set in a Russian farm town housing secret WMDs. For Zombies fans, “Call of the Dead” features a cast of iconic horror film stars battling zombies on a Siberian island.