Smash hit iOS and Android title, Puzzle & Dragons, is coming to the Nintendo 3DS in Japan, according to Dengeki Nintendo and CoroCoro magazine. The free to play title has already amassed over 12 million users. In just three months Puzzle & Dragons has doubled from six million. The game has been out since last February on iOS and last September on Android in Japan. Puzzle & Dragons was released in the US and Europe in November.