Though Call of Duty: Modern Warfare 3 Zombies has proven to be a massive hit for Activision and Treyarch, it was not the first attempt at an open-world Zombies mode. Call of Duty: Black Ops Cold War’s Outbreak was also quite successful, as though it lacked the loot grind and huge player count that has helped MWZ catch on, it had some other strengths that helped make it worthy of players’ time. In fact, some of these features would be great to see within MWZ, and they would make some phenomenal additions in Season 2 of the FPS.