Nintendo's new handheld game machine is making a splash with holiday shoppers, who snapped up more than 500,000 DS machines in the product's first week on the market. The Japanese game giant reported Tuesday that more than 90 percent of available Nintendo DS units were snapped up in the week after they went on sale Nov. 21.

The buying frenzy is already creating shortages at some retailers, a situation becoming distressingly familiar this year for anyone with gamers on their shopping list. As of Wednesday, Amazon.com has DS units available only from Amazon Marketplace partners, some of whom were charging a $100 premium over the $150 list price for the DS. CompUSA didn't even have the DS listed on its Web site, while specialty retailers GameStop and EBGames listed the DS as back-ordered, with EBGames promising delivery by Jan. 31.

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