Android, Windows Phone, and Windows 10 followed. It is a variation on their browser game Candy Crush.[1]
In the game, players complete levels by swapping coloured pieces of candy on a game board to make a match of three or more of the same color, eliminating those candies from the board and replacing them with new ones, which could potentially create further matches. Matches of four or more candies create unique candies that act as power-ups with larger board-clearing abilities. Boards have various goals that must be completed within a fixed number of moves or limited amount of time, such as a certain score or collecting a specific number of a type of candy.
Candy Crush Saga is considered one of the first and most successful uses of a freemium model; while the game can be played completely through without spending money, players can buy special actions to help clear more difficult boards, from which King makes its revenues. Around 2014, over 93 million people were playing Candy Crush Saga, while revenue over a three month period as reported by King was over $493 million.