Within a week of its Japanese release, Kingdom Hearts II shipped one million copies, selling almost 730,000 copies. The NPD Group reported that Kingdom Hearts II was the highest-selling console game in North America during March 2006 with 614,000 copies. In the month after its release in North America, Kingdom Hearts II sold an estimated one million copies. GameStop listed the game as their best-selling title for the first quarter of 2006. The game was also on IGN's "Top 10 Sellers in 2006". By December 2006, over 3.5 million copies of Kingdom Hearts II had been shipped worldwide with 700,000 in PAL regions, 1.1 million in Japan, and 1.7 million in North America. By March 31, 2007, Square Enix had shipped over 4 million units worldwide.
