Kikizo Games has a great little article looking at the recent Japanese sales chart, and the future.
"The Japanese charts tell of the decline of the home console in that country and the subsequent takeover by handhelds. Where previously you would be hard pressed to find anything but PlayStation 2 games on the weekly Japanese sales, the latest Top 10 is populated by no less eight portable games.
The big winner in all this is Nintendo, which is banking on both the popularity of its rich past and the novelty of the DS and the games on it. The success of this strategy on its handhelds is not only good news for the company right now, but it bodes well for its biggest leap of faith: the Revolution. "