"Call of Duty: Infinite Warfare's" physical sales in the United States dropped this year. Sales were roughly half than "Black Ops III's" 2015 sales. Digital sales, however, are excluded.

In a meeting with investors, Cowen analyst, Doug Creutz, said: "Infinite Warfare units came in 17 percent shy of our expectations, down close to 50 percent [year-over-year]."

During their earnings conference call on November 1, Electronic Arts said that their digital sales now represent 30 percent of the industry's total sales. The physical sales drop of "Call of Duty" is so large it makes more likely that the overall decline will be worse than expected.

"Call of Duty: Infinite Warfare" is developed by Infinity Ward and published by Activision. The game, which was released for Microsoft Windows, PlayStation 4, and Xbox One earlier last month, is the thirteenth primary installment in the "Call of Duty" series. "Call of Duty: Infinite Warfare" is the first game developed by Infinity Ward since "Call of Duty: Ghosts" in 2013.

The game features an entirely new setting - outer space. IGN.com described the game setting that takes "the player to places they've never been before." Two new characters were introduced: Captain Nick Reyes and SSgt. Omar. The campaign features news weapons and abilities, with Activision describing it as a "near seamless experience with few visible loading times."

However, sales are way lesser compared to previous years. A source told CNBC that NPD data went down 51 percent in November 2016, compared to the same time last year when "Black Ops III" was released. Physical sales in the UK also went down with a magnitude similar to that of US sales. Activision said they expected the drop since "Call of Duty: Infinite Warfare" is a new sub-brand, compared to the return of the highly popular and established "Black Ops" franchise.