Nintendo president Satoru Iwata has told Japanese paper The Nikkei that the Nintendo 3DS is about to cross the three million mark, which is just ahead of the Nintendo DS.
Nintendo also expects the 3DS to reach the four million mark before its one year anniversary. Iwata also told The Nikkei that Mario Kart 7 sold around 420,000 units in its first week on sale, which is around double that of the Nintendo DS version.