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Call of Duty Online (also known as CODOL, CODO, and Call of Duty: Online, Chinese: OT}SU$Online; pinyin: Shmng zhohun Online) was a free, online first-person shooter video game developed by Activision Shanghai and Raven Software.
Since 2009, a Call of Duty game has been the best-selling game of almost every year. Its latest game, Call of Duty: Modern Warfare III, releases in November, and will be the first title from publisher Activision Blizzard under its newest owners, Microsoft.