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Activision has released the seventh installment in its Call of Duty series, a first-person shooter that takes place during the Cold War and could wind up being the best-selling video game in history.

Players take on the role of US Special Forces operative Alex Mason and CIA agent Jason Hudson, both of whom are involved in clandestine operations based on real-life plots involving Cuba and the former USSR.

Critics decry the violence featured in Call of Duty, but the series of games, which have encompassed World War II and modern counter-terror operations, never cease to prove their popularity.

Source: Al Jazeera