DS outsells both PSP and PS2 combined in first week of Nintendogs release, Nintendo's handheld still on top a month later.
Nintendogs, Nintendo's puppy-petting game, has helped bolster DS sales after a sluggish stretch brought on by the launch of Sony's own portable device, the PSP. According to Media Create, the DS has been the best-selling piece of gaming hardware in Japan since the release of Nintendogs on April 21, outselling both the PlayStation 2 and the PSP. The only exception was the week of May 9 when overall game sales fell as Japanese workers returned to work after the golden week of holidays.
News source: GameSpot
