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Last month was the worst August in four years for U.S. video game sales, according to a new NPD Group report. Revenue fell 10% from August of last year as gamers scaled back on portable-gaming purchases and turned to -- often free -- online games instead.

Here's news from the business world and other money matters to watch out for Wednesday (last updated at 7:56 a.m. Eastern time): Wal-Mart Quietly Raises Prices: Consumers who think prices at their local Walmart have been on the rise lately may not be imagining things. A JPMorgan Chase (JPM) study...

Video-game console makers see motion-sensing technology -- playing Madden NFL 11 by running around your living room -- as salvation. Sorry, guys: Games on smartphones, social networks and in the cloud are going to eat your lunch.

Best Buy posted disappointing first-quarter results this morning, falling well short of analysts' expectations. Cautious customers lifted the retailer's overall U.S. sales by 5%, but lower sales of TVs, video games and movies cut into its profit margins.