Over the last almost two decades, Call of Duty has had 19 separate entries, and while not all of them are equal each one certainly has its own defining traits that set it apart from the rest. Call of Duty: Advanced Warfare is the prime example of this, as it's one of the most divisive Call of Duty entries at the time, but it has a handful of innovative mechanics and features that still set it apart from the rest of the franchise today.