Square Enix and Nintendo are collectively throwing their hats in the air today as Dragon Quest IX becomes the best selling addition to the prolific franchise ever.

The DS-only game topped out the previous bestseller Dragon Quest VII, which pushed an impressive 4.14 million games onto the PlayStation back in 200. Dragon Quest IX has apparently just shipped 4.15 million units since its Japanese release in July of this year.

Although Nintendo can now thumb its lapels in Sony's direction for sporting the biggest Dragon Quest game of all time, Square Enix is allowed to play it a bit cooler as it predicted massive sales right from the start.

For all its massive success, Dragon Quest IX is still only available in Japan. What's that all about, then?

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