Activision Blizzard's (NASDAQ: ATVI) four biggest franchises are Call of Duty, Candy Crush, World of Warcraft, and Overwatch. These games span all platforms (console, PC, and mobile), and as a group, accounted for 66% and 69% of total revenue in 2017 and 2016, respectively. The initiatives behind each of these franchises give investors a broad view of how Activision Blizzard is making money and where its future growth opportunities lie, so let's take a closer look.The Call of Duty franchise has been one of the most successful in the industry, ranking as the top-selling franchise in the world eight of the last nine years. What makes this run of successes impressive is that this game gets a new release every year, which means Activision has to constantly innovate to win over players, and they have clearly achieved that for several years.Image source: Activision Blizzard. Continue reading