Call of Duty: Modern Warfare 3 Zombies has been a bit of an unexpected success for Treyarch. When it was first announced, much of the Zombies fan base pushed back against the idea of an open-world experience, especially after Vanguard 's objective gameplay disappointed. However, though there are issues such as a reused Warzone map instead of an original location, most players seem to be having a good time with the mode. Replayable, unique, and ambitious, there is plenty to praise about Call of Duty: Modern Warfare 3 Zombies, but unfortunately, exfils are no longer a strength.