When did Black Ops 1 zombies come out?

December 1, 2011
Call of Duty: Black Ops – Zombies
Platform(s) iOS Android
Release WW : December 1, 2011
Genre(s) First-person shooter
Mode(s) Single-player, multiplayer

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When did Black Ops 2 release?

November 12, 2012
Call of Duty: Black Ops II/Initial release dates
Call of Duty: Black Ops II is a 2012 first-person shooter video game developed by Treyarch and published by Activision. It was released for Microsoft Windows, PlayStation 3, and Xbox 360 on November 12, 2012, and for the Wii U on November 18 in North America and November 30 in PAL regions.