2. Call of Duty Series – $15,000,000,000
Call of Duty was first published in 2013 by the California-based Activision. The first game was based on World war II and even include the cold war, futuristic, and outer-space settings. Only by February 2016, the series has sold over 250 million copies.
The game’s vivid realness, has made it a surprisingly favorite among members of the military. Because of the soldiers love it so much, US Armed Forces seriously adapted some of their training to simulate elements of the game.
