Picture: Japanese phone key pad
"Japan's Softbank, last year saw its revenue tripling to 1.5 billion euros ($2.11 billion) and profit doubling to 515 million euros."
Source: Less is more: the risky strategy behind the world's biggest mobile game
May 21, 2015 Jussi Rosendahl
The Age Newspaper
http://www.theage.com.au/digital-life/games/less-is-more-the-risky-strategy-behind-the-worlds-biggest-mobile-game-20150520-gh69fp.html