Square Enix has announced that Kingdom Hearts II has sold through more than one million units in North America in only four weeks.

"Kingdom Hearts II has sold through one million units in just one-third the time of that of the original, proving that fans were waiting to get their hands on the sequel," said Daishiro Okada, President & COO, Square Enix, Inc. "The winning combination of Disney and Square Enix has done it again and we couldn't be happier with the results."

The entire Kingdom Hearts series has shipped more than 8.5 million units worldwide.