Call of Duty: Zombies Wall Calendar: Get your adrenaline on! Call of Duty is a rush even when you’re not in front of a screen. Find your favorite characters, settings, maps, and modes as you take a tour through the action-packed game’s editions in the 2018 Call of Duty Calendar that includes the last four months of 2017. It features spacious grids, printed on paper certified by the Forest Stewardship Council, that provide plenty of room to schedule every COD session.