Japan Mobile Game Giants Ring Up Profits - but for How Long?
Description:Once upon a time, people couldn't get enough of games like this fishing simulator. But they're looking more and more like a dying breed. Gamers are now shifting to their smartphones and getting their gaming fix through apps. Japan's social gaming giants, used to luring users to their platforms, are struggling to keep up with the times. DeNA - Japan's third biggest online gaming company by market cap - saw operating profit drop 17 percent in the first half of this business year.(2:34)