Many gamers are well aware of what a behemoth Activision Blizzard is in the gaming industry. The company is so massive that Microsoft's acquisition comes with the historic price tag of nearly $69 billion, and should the acquisition go through, Microsoft will be the third-largest gaming company by revenue, sitting behind only Tencent and Sony. What may not be so obvious to many gamers is how much of Activision Blizzard's value comes from the Candy Crush developer King. Activision Blizzard's acquisition of Candy Crush cost $5.9 billion, and the simple puzzle game continues to rake in billions for its owners.