Ever since Call of Duty 2 launched in 2005, the Call of Duty franchise has been operating on an annual release schedule for its main series games. Call of Duty 3 followed Call of Duty 2 in 2006, then Call of Duty 4 dropped in 2007 and so on and so forth. This aggressive annual release schedule has worked for the most part, with the majority of main series Call of Duty games earning rave reviews and selling millions of copies.
However, it may be time to retire the Call of Duty annual release
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