Three Call of Duty games published between 2015 and 2020 cost almost $2 billion total in development costs, according to a court filing published in December, as first reported by Game File and reviewed by Polygon.

Starting with Black Ops 3, Kelly reportedly claims $450 million was invested into the 2015 shooter's development costs over its lifecycle, while Modern Warfare saw a massive jump

A new report has revealed just how much money Activision has been spending on making the last few Call of Duty games, and, well, it's a lot.

Black Ops Cold War' cost $700 million to develop - making the 2020 shooter the most expensive game of all time.