1. Call of Duty (2003) The franchise's first game was developed by Infinity Ward and published in 2003. This is the first of many entries in the series focused on World War II, following the steps of other household names like Medal of Honor.
The games in the series are connected through the characters, events, and themes that are introduced in each installment. The story arc begins with Call of Duty 4: Modern Warfare, continues with Modern Warfare 2 and concludes with Modern Warfare 3.