Call of Duty: Zombies is a six-part comic book series published by Dark Horse Comics. The series ties in with the Zombies game mode of the Black Ops subseries developed by Treyarch. The series is co-written by Justin Jordan, Treyarch's Jason Blundell and Craig Houston. The series is illustrated by artist Jonathan Wayshak and colorist Dan Jackson. The cover arts are handled by artist Simon Bisley. The series was announced by Treyarch on July 2016, with the first issue slated for release in October. After a slight delay, the first issue was released on October 26, 2016. The five other issues were released in the months of 2017: issue #2 released on January 11, 2017; issue #3 released on March 1, 2017; issue #4 released on April 19, 2017; issue #5 released on June 21, 2017; and issue #6 released on August 23, 2017. A paperback edition containing all six issues was released on November 15, 2017.
Call of Duty: Modern Warfare 2 is the sixth installment of the main series. It was developed by Infinity Ward and published by Activision. Activision Blizzard announced Modern Warfare 2 on February 11, 2009. The game was released worldwide on November 10, 2009, for the Xbox 360, PlayStation 3 and Microsoft Windows. A Nintendo DS iteration of the game, titled Call of Duty: Modern Warfare: Mobilized, was released alongside the game and the Wii port of Call of Duty : Modern Warfare. Modern Warfare 2 is the direct sequel to Call of Duty 4 and continues the same storyline, taking place five years after the first game and featuring several returning characters including Captain Price and "Soap" MacTavish.