Before 2008, no video game system had ever been purchased by ten million Americans in a single year. But according to sales data released today by the NPD Group, the Wii console from Nintendo did just that, even during these economic times, with 2008 unit sales of 10.17 million.

The Nintendo DS portable handheld system came in a close second, with 2008 unit sales of 9.95 million. Each of them broke the previous yearly unit sales record set in 2007 by Nintendo DS with sales of 8.52 million.

Consequently, Wii represented 55% of all next generation home console sales in 2008, while Nintendo DS claimed 72% of all portable system sales in 2008.

"Our type of entertainment has now moved to the point where there is no longer a question that if you offer consumers an expanded definition of what a video game can be, and deliver that idea with quality and affordability in mind, millions of new people will start playing video games," said Cammie Dunaway, Nintendo of America?s executive vice president of Sales & Marketing. "Concepts like Wii Fit, Guitar Hero, and Rock Band never would have seemed feasible just a few years ago, and now they?re driving growth for our the entire industry."

The four top-selling video games last year are Wii titles, and Nintendo's retail success is credited with helping video game industry revenues in 2008 rise 19 percent from the previous year.

These games are Wii Play at No. 1, Mario Kart Wii at No. 2, Wii Fit at No.3, and Super Smash Brothers Brawl, at No. 4.

Industry annual revenues jumped 19% in 2008 over 2007, and Nintendo products were responsible for 99% of those additional retail dollars. Nintendo DS set another industry record for system sales in any month, with 3.04 million units sold in December.

Wii broke its own monthly record, set in December 2007, by selling 2.14 million units last month.

Activision?s Guitar Hero III: Legends of Rock and Guitar Hero World Tour, and MTV Games/EA?s Rock Band Special Edition Bundle also sold more units on Nintendo platforms than any other platforms in 2008.

For the year, more than 132 million games were sold in America for play on Nintendo systems.

Here's a quick rundown of the U.S. console sales in December and a list of the top 10 games for 2008. Wii: 2.15 million units
Xbox 360: 1.44 million units
PlayStation 3: 726,000 units
PlayStation Portable: 1.02 million units
Nintendo DS: 3.04 million units