Mario Party DS reached 1 Million in < 2 Months (released on Nov 8, 2007)
Babelfish translation, and edited (and added) for easier reading :
Mario Party DS sales exploded, with sales of 300K last week (period Dec 17 - 23), bringing its LTD to 1 Million in less than 2 months.
Edit : Removed the Japanese text as per request.
23