The saga of Candy Crush

The saga of Candy Crush

BBC: Candy Crush Saga - the "match-three" mobile game - was the highest grossing app on both iPhone and iPad in 2013.

Stand on a crowded commuter train in New York, Paris, London, Tokyo, or Berlin and you will see a multitude of people. Goldfish-mouthed, eyes glazed, deeply breathing, fixated on one thing only.

Getting rows of red jelly beans or orange lozenges to disappear.

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