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.