No, you're not surprised. Nintendo (OTC: NTDOY) moved the most video-game consoles in the U.S. in July. According to this Bloomberg article, which cites monthly data supplied by market-research firm NPD, gamers purchased over 550,000 Wii systems. Sony's (NYSE: SNE) PlayStation 3 was snapped up by almost 225,000 players, and Microsoft's (NASDAQ: MSFT) Xbox 360 sold about 205,000 units.

There's no question about it now -- the Wii should dominate the holiday season. Momentum is behind the company's strategy of creating products that appeal to casual gamers. I'd be shocked if the fad all of a sudden burned itself out, although Douglas McIntyre did write recently about the possibility of Nintendo running out of steam at some point. The Wii Fit exercise system was the second best-selling software title in July. That property is definitely helping drive Nintendo's fortunes.

In other software statistics, Electronic Arts (NASDAQ: ERTS) was number one with NCAA Football '09. Activision Blizzard (NASDAQ: ATVI) came in third with its version of Guitar Hero for the Nintendo DS handheld unit. EA should come out on top again next month since the new iteration of its Madden franchise came out earlier this week. There was a lot of excitement over that game, as there traditionally is every summer.

Well, another month's gone by, and I see that the Nintendo (OTC: NTDOY) Wii system is still the number-one selling console in the United States. Guess I shouldn't be surprised. According to Bloomberg, the Wii moved over 666,000 units in June. Yeah, that may be an evil number, but it's a righteous one to Nintendo, since Sony (NYSE: SNE) sold a little over 400,000 PlayStation 3 consoles last month while Microsoft (NASDAQ: MSFT) convinced just under 220,000 users to adopt the Xbox 360. So if you add the performance of the PlayStation 3 and the Xbox 360 together, it's still less than Nintendo's.

Bloomberg reported that the Wii has been purchased by (or for) 10.9 million gamers, making it the number-one installed platform out there. Driving the results in June was the Wii Fit, which continues to be popular and difficult to get. However, the top-selling game software was not Wii-related, it was PlayStation 3-related, believe it or not. Metal Gear Solid: Guns of the Patriots, distributed by Konami (NYSE: KNM), sold over 770,000 discs. One big opportunity Nintendo needs to work on is third-party attachment rates. As several readers have mentioned to me, the attachment rates for the Wii isn't as good as it probably should be. Most Wii owners are in love with Nintendo-published games, but sometimes don't see the value of software made by other publishers. An increased focus on this would be helpful to the platform and its continued success.

Nintendo is setting itself up very nicely for the holiday season. Sure, it's the height of summer, but it's never too early to be thinking about the holidays, is it? I would love to get into Nintendo's stock, but I am still stubbornly holding out for a better pullback on the ADR's. I'd love to see the price close below $60 at some point.

Disclosure: I don't own any company mentioned; positions can change at any time.

Take-Two Interactive's (NASDAQ: TTWO) Grand Theft Auto IV game stole the number-one position on the software sales chart for May, according to data from market research firm NPD. It sold over 1.3 million copies last month, and it has moved over 4 million since it hit the street. I figured Take-Two would be taking the top slot here, but the big question on my mind pertained to how Nintendo's (OTC: NTDOY) Wii system would do in May. After all, the fad has to wear out at some point, right? At some magical juncture, either Sony's (NYSE: SNE) PlayStation 3 or Microsoft's (NASDAQ: MSFT) Xbox 360 will displace the Wii and become the top-selling system of the month.

Well, that hasn't happened yet. The Wii sold the most, moving 675,000 systems. That was more than three times the amount of consoles sold by PlayStation 3. And as for the Xbox 360, that came in dead last, moving only 187,000 units. All told, total video-game sales, including hardware and games, increased 37% year-over-year. Yep, video games are still hot.

I'm going to predict that the Wii Fit will be the top-selling game package for the month of June. This thing is flying off the shelves in my area, even at $90 (apparently, high fuel costs aren't hurting Nintendo's clientele). Does that mean that Nintendo might make for a good short-term trade? Maybe, but I'd prefer buying it safely below $60 per share. As of this writing, it's trading well above $60 per share. I continue to hold Activision (NASDAQ: ATVI) as my play on video games, and will be keeping Electronic Arts (NASDAQ: ERTS) in the back of my mind as August approaches, since that will be when the new Madden game arrives in stores. Not sure if that's worthy of a trade yet.

Disclosure: I own Activision; positions can change at any time.

Another month has gone by, and in the world of video games, the story remains the same. I have been very impressed with the resilience of the Nintendo (OTC: NTDOY) franchise. This Wii "fad" just continues on and on. According to data from marketing-research firm The NPD Group, last month, the Wii system sold over 714,000 units, and the Nintendo DS moved over 414,000 units. Game systems by Sony (NYSE: SNE) and Microsoft (NASDAQ: MSFT) were left far, far in the dust. The Associated Press said all other major systems couldn't even reach 200,000 in terms of unit sales.

And now, this week will bring a potentially big catalyst for the Wii. The Wii Fit device, which is an electronic exercise program designed to take full advantage of every innovative nuance offered by the console, is expected to be a huge hit. I can almost guarantee that it will be, as I personally have heard a lot of buzz over it and, on an anecdotal level, I know a lot of people intend to pick it up when it is released. I don't think it's going to fail, even at the relatively high price point of around $90.

I'm not, however, going to buy any Nintendo stock based on the coming excitement this week, even though I think the shares have a great chance of popping. I've owned Nintendo in the past and made money on it, and I'm always thinking about when to re-enter, but for now, I am staying on the sidelines. For me, it feels like too much of a risk in terms of investors selling on the news once the Wii Fit is out. I could be wrong, of course; in fact, Nintendo's ADR's closed up a buck to settle at $72.50 per share on Friday. That puts it not too far away from the 52-week high. But, as much as I love the video-game sector -- I own shares of Activision (NASDAQ: ATVI), in fact -- and as much I recognize Nintendo's dominance over the PlayStation 3 and the Xbox 360, I'm going to sit this one out.

Disclosure: I owns shares of Activision; positions can change at any time.

Best Buy, Inc. (NYSE: BBY), always the one to capitalize on unique marketing opportunities at every chance it gets, sees another one coming down the road very soon. The upcoming Nintendo Wii gaming title Wii Fit, which is to be released on May 17, should be one of Nintendo's hottest gaming titles of this year.

The Wii has made its mark using interactive and physical gameplay, requiring the physical involvement of the players instead of the couch potato thumb involvement of regular competitive game consoles. For that reason alone, the Wii has become immensely popular, outselling both the Sony Corp. (NYSE: SNE) Playstation 3 and the Microsoft Corp. (NASDAQ: MSFT) Xbox 360.

Best Buy's marketing angle with the Wii Fit release happening in over a month includes some teaser ads near fitness DVDs that use Nintendo's catchy Wii slogan: "how will it move you?" The new Wii Fit game, which will include a "balance board" to help those playing the game to interact as much as possible physically, needs to have a "best outlet" for sales here in the U.S. due to its existing mass population appeal, and if Best Buy can ramp up anticipation correctly, it may become the outlet to buy the Wii Fit game title come the third week of May. That is, unless competitor Circuit City Stores, Inc. (NYSE: CC) becomes aggressive on its Wii Fit marketing -- and I don't see that happening.

Whoever invented the Wii Fit, a virtual gym that can be used in conjunction with the gaming console, deserves a medal. Heck, he or she deserves a raise because it's going to be a huge seller for Nintendo Co. (OTC: NTDOY).

This game is perfect for someone like me who doesn't exercise as much as he should, which in my case means hardly ever. The Wii Fit, which will be available May 19, also will be useful for parents trying to get their children to exercise more. "Wii Fit is all about breaking the definition of video-gaming, about something that keeps you and your family fit and engaged," said Reggie Fils-Aime, president of Nintendo's U.S. division, in an interview with The Wall Street Journal.

Nintendo officially launched a game in the US which has a feature that Sony (NYSE: SNE) and Microsoft (NASDAQ: MSFT) have yet to introduce. The Nintendo Wii Fit is aimed at gamers who want a little exercise. The new product may speak volumes about why the Japanese company has a sales lead over its two rivals.

According to The Wall Street Journal, the new product "comes with a weight-and-motion sensing device called the Wii Balance Board." Nintendo is also launching a service that allows video games to be distributed over the internet.

The Wii Fit will be introduced with games including one that gives the sensation of skiing.

While products like the Xbox 360 and Playstation 3 are based largely on the old model of a console that the user operates from a fairly fixed position, Nintendo has moved in the direction of gaming that involves the user participating directly in the action on the screen. The Wii Fit has sold 1.4 million units in Japan in a little over two months.

Now Microsoft and Sony have something else to worry about from the market leader.

Douglas A. McIntyre is an editor at 247wallst.com.

Nintendo's stock was up again last night in Tokyo. No wonder. It is still beating Microsoft (NASDAQ: MSFT) and Sony (NYSE: SNE) with newer and better innovations in the game console business.

The latest gem from the Japanese gaming firm is the Wii Fit.

According to Reuters "the new game features a pressure-sensing mat called the "Wii Balance Board", which looks like a set of bathroom scales and can sense when a person moves and leans, enabling players to "head" virtual soccer balls and experience ski jumping on a TV screen." It can also be used for yoga and other exercises.

The poor people who make the Xbox 360 and PS3 must be scratching their heads. First, Nintendo beat them in units sales for next generation game sales. Now, the smaller company comes to market with a product that pushes the envelop of what a video game is and what it can do.

Perhaps the people at Microsoft and Sony are not interested in fitness.

Douglas A. McIntyre is a partner at 24/7 Wall St.