DS sells 10 mil in Japan; You’d think it’d be more

DS LiteRespected Japanese publication Famitsu announced today that Nintendo hit the 10 million sold milestone in Japan for the DS Lite. It also did it in record time selling more than two times faster than the mega-selling PS2 for the same period.

Not sure how high the total is including DS phats, but I would have sweared this would have been more. Don’t the Japanese buy like a half mil of these things per day?