Candy Crush Saga is a puzzle game launched by King on April 2, 2012. This game was first launched on Facebook and later to all popular app stores. Within a short span of time this has surpassed most of the popular gaming apps like Farmville 2 to become the top most popular game on Facebook of 2013. As of Jan '14 the have 60 million+ fans on Facebook and more than 500 million installs.
Though the game is a free to play game some of the items require in-app purchases. King is thought to earn as much as $900,000 a day from the app and the company is planning to float on the Nasdaq stock exchange in New York later this year.
The have recently launched an extension to this game called 'Dreamworld' which consists of 30 levels for Facebook, Android and iOS devices. In Jan '14 they were granted the trademark to the word 'candy', to which many publishers have filed an opposition complaint.