Nintendo managed to prepare around 200,000 DSi consoles in time for its Japanese launch at the beginning of last month, leading to around 170,779 units in actual sales within a week.  Fast forward one month to where we are today, and it appears the DSi's momentum has yet to let up.  According to Japanese magazine publisher and industry research analyst Enterbrain, DSi sales have reached an estimated 535,379 units since launch.

Enterbrain's figures won't be too far fetched if we consider the publisher's own weekly console sales data, which show the DSi topping the hardware sales chart each week since early November.  It's certainly been selling out consistently.  The strong DSi performance is naturally good news for the DS product line as well.  Lifetime-to-date sales for the hardware family in Japan are now over 24 millon units as a result.