Call of Duty was a popular game series that included many titles. Every work had its own unique characteristics and style, so it was difficult to say which work was the best. However, according to the reviews of players and critics, here are some of the well-received Call of Duty titles: - Call of Duty: Modern Warfare was released in 2003. It provided a multiplayer online game platform where players could interact with players from all over the world to complete various missions and battles. - Call of Duty: Black Ops was the second game in the series, released in 2005. It provided a multiplayer online game platform where players could interact with players from all over the world to complete various missions and battles. - Call of Duty: World at War was the third game in the series, released in 2008. It provided a multiplayer online game platform where players could interact with players from all over the world to complete various missions and battles. - Call of Duty: Modern Warfare 2 was the fourth season of the series, which was released in 2010. It provided a multiplayer online game platform where players could interact with players from all over the world to complete various missions and battles. - Call of Duty: Black Ops 2 was the second game in the series, released in 2006. It provided a multiplayer online game platform where players could interact with players from all over the world to complete various missions and battles. - Call of Duty: World at War 2 was the fourth season of the series, which was released in 2012. It provided a multiplayer online game platform where players could interact with players from all over the world to complete various missions and battles. The above are the highly acclaimed Call of Duty works. Each work has its own unique characteristics and styles. Players can choose according to their preferences.