New York (CNN) "Call of Duty: Modern Warfare" is out and hopes are high that video game publisher Activision Blizzard has scored another big hit.

The first-person shooter is set in a fictitious Middle Eastern country and across Europe. The main narrative forces players to navigate the ambiguous moral choices of war, while a multiplayer mode pits teams against each other as they try to get the most kills while surviving for as long as possible.

Whereas popular shooting games like "Fortnite" and "Overwatch" contain fantasy elements, "Call of Duty" aims to appeal to hardcore gamers with more realistic scenes.

Activision Blizzard ATVI Analysts predict the new game will sell millions of units and be a mainstay hit for. It's the fourth entry in the "Modern Warfare" lineup and one of dozens of releases in the massive "Call of Duty" franchise.

"Call of Duty" has been the best-selling game franchise in the United States for 10 years in a row, according to Mat Piscatella, an analyst at NPD Group.

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