Examples of this are PS Vita’s Call of Duty: Black Ops: Declassified and DS’s Call of Duty: Modern Warfare 3: Defiance. In fact, many main entries have significantly different editions for their mobile and portable titles when compared to the major console releases. Some spin-offs include the strategy games Call of Duty: Siege launched in 2016, based on Infinite Warfare’s universe, Call of Duty: Heroes, released in 2014, or the mobile version of Call of Duty: Black Ops.
For example, Call of Duty: United Offensive is an expansion of the first title, while Call of Duty: Finest Hour and Call of Duty 2: Big Red One are side stories of the first two entries. However, things get complicated when you add all the expansions, online experiences, mobile games, and spin-offs. 20 if you add the upcoming Modern Warfare III. If we consider only the main entries, including all the World War II titles, the Modern Warfare series and its reboot, and the Black Ops series, there are 19 video games in the franchise. Due to quite a few subseries, a reboot, and many studios that have worked or are working in the series, it can be a bit troublesome to determine how many Call of Duty games have been released.
