It was an even better quarter for the Wii's evergreens. Wii Fit sold an additional 3.6 million copies, bringing its LTD to 21.82. Mario Kart Wii sold 2 million, making its total 17.39 million. And Wii Sports sold an additional 1.91 million copies, bringing its total sales number to a ridiculous 47.62 million, including copies sold in hardware bundles.

And that's why there's a sequel.

The theme here is beach games -- perfect for people like us who don't particularly enjoy going outside, let alone baring our flesh. On stage at Nintendo's E3 press conference, we were treated to demos of games such as Disc Dog (lobbing a frisbee for your dog), Jet Ski (self-explanatory), and a sword-jousting minigame in which players attempt to knock each other off of a platform.

The videogames business, after hitting a new sales high last year, this week plans to showcase new technologies to help spur further growth -- including a new product from Nintendo Co. to get users to exercise using their Wii game consoles.

Nintendo announced today that it will ship a new exercise product on May 19 in the U.S. called Wii Fit that comes with a weight-and-motion sensing device called the Wii Balance Board.

Wii is unlike other video game consoles out there. A standard videogame only requires players to move their thumbs and index fingers, whereas the Wii actually requires players to move their hand or occasionally their entire arm to interact with the game. The Wii console has done much to get couch potatoes off their duff and playing video games - but apparently not enough.

For the British Medical Journal study boys and girls between the ages of 13-15 were selected to play both an Xbox 360 game (Project Gotham Racing 3) and Wii games (Wii Sports). Later the Journal would compare calories burned by the kids while playing each of the games.

The results were unsurprising. The Wii used on average 51 percent more energy than playing a sedentary Xbox 360 game. The Wii Sport game Tennis demanded the most energy from study participants with an energy expenditure of 750 kilo joule (a kilo joule is an international system unit for measuring energy). Wii Boxing expended 730kj and Wii Bowling at 700kj. By comparison, playing Xbox 360 games had a mean energy expenditure of 450kj - a measurement just slightly higher than resting (300kj).

"You'll be able to see who's gaining traction and losing traction," said Michael Pachter, analyst at Wedbush Morgan Securities. However, Pachter predicted that the 2008 holidays will be even more competitive if the Wii is in better supply and if prices of all three consoles drop further.

The Wii, which sells for $250 and features a motion-sensitive controller, sold 13.2 million units worldwide as of September, Nintendo said. Microsoft reported that the Xbox 360 -- in models priced from $280 to $450 -- had sold 13.4 million units at the time. Then, in October, U.S. sales of the Wii exceeded Xbox 360 sales, according to the NPD Group. Combined with the Nintendo console's strength in the Japanese market, that effectively would bring the two into a dead heat in cumulative sales.

The PlayStation 3, which sells for $400 and $500, has sold 5.6 million units worldwide, a company spokesman said. Sony's PlayStation 2 dominated the previous console generation.

The active-play phenomenon started by Wii Sports now spreads to your whole body thanks to the pressure-sensitive Wii Balance Board (name not final), which comes packed with Wii Fit. The board is used for an extensive array of fun and dynamic activities, including aerobics, yoga, muscle stretches and games. Many of these activities focus towards providing a "core" workout, a popular exercise method that emphasizes slower, controlled motions. Family members will have fun staying active and talking about and comparing their results and progress on a new channel on the Wii Menu.