Call of Duty: Black Ops 4 Was October 2018's Best-Selling Game - IGN
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Can Call of Duty: Black Ops III Outpace The Performance Of Previous Black Ops Titles?
Best-selling Call of Duty games | Statista
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Chart: The Best-Selling Call Of Duty Titles | Statista
Call of Duty sales figures show surprising results for Black Ops 4, WWII and more - Dexerto
Call of Duty: Black Ops 4 - Wikipedia
Game Data Library on X: "Retail launch sales of Call of Duty: Vanguard in Japan are the lowest of the series since 2007's Call of Duty 3. Less than half of the
Call of Duty Franchise Game Sales Statistics - Statistic Brain
Call of Duty: Black Ops 4 has made over $500 million worldwide in three days | VG247
Call of Duty Modern Warfare beats Black Ops 4 in first week sales | KitGuru
Call Of Duty: Black Ops 4' Made $500 Million At Launch, But There's A Catch
Call of Duty sales figures show surprising results for Black Ops 4, WWII and more - Dexerto
Call of Duty: Black Ops 4's PC launch day sales are more than double from last year | PC Gamer
