How GungHo Online Entertainment created Puzzle & Dragons, the surprise billion-dollar mobile game

GungHo Online Entertainment has moved from obscurity to becoming one of the major players in mobile games this year thanks to the enormous success of its free-to-play Puzzle & Dragons game, which has dominated the top-grossing app store charts on a worldwide basis for months. It’s generating $2.5 million in revenue a day, with downloads above 11 million. It combines casual Bejeweled-like gameplay with a hardcore role-playing game.