The NPD Group, GfK Chart-Track Limited and Enterbrain, Inc., today announced the release of Top Global Markets Report which collates software sales data from the US, UK and Japan.

The report shows that GTA IV has comes out on top by some margin selling 6.3 million copies in US and UK. Some way behind it is Nintendo's Super Smash Bros. Brawl, which has sold a total of 5.4 million units across all three territories.

To break it down: GTA IV has sold 4,711,000 units in the US and 1,582,000 in the UK whereas Brawl has sold 3,539,000 units in the US, 213,000 in the UK and 1,681,000 in Japan.

From the release:

"The leading games information sources in the U.S, U.K. and Japan – the largest games markets in the world – have joined forces to provide the gaming industry with a single source for sales data providing detailed insight into what’s happening in these important markets."

"The video games business has become increasingly global, with the majority of the publishers releasing games in multiple markets,” said Anita Frazier, industry analyst, The NPD Group. "The U.S, as the world’s largest market will be able to view and compare sales for the first time outside of their own market."

Top 5 listed below, full release after the link.