Nintendo says it has sold more than 600,000 of its new Wii game consoles in the first eight days since they became available in North America.
Some US gaming fans queued for hours to buy a Wii console
As a fresh "console war" hots up, the figure tops the 200,000 or so PlayStation 3 units that rival Sony is thought to have sold in the US.
The Wii went on sale in the US and Canada on 19 November, two days after the PlayStation 3 debuted in the US.
They are competing against a third console rival, Microsoft's Xbox 360.
While the Wii and PlayStation 3 are only now hitting the shops, the Xbox 360 first went on sale in the US a year ago.
Nintendo says it will ship four million Wii units across the US and Canada by the end of the year, while Sony has a target of one million.
"Even with sales already in excess of 600,000 units, demand continues to exceed supply, as it's clear this is one of the 'gotta-have' products for the holiday season," said Nintendo's US president Reggie Fils-Aime.
"We've shipped retailers several times the amount of hardware the other company was able to deliver for its launch around the same time - and we still sold out."
At $250 (£128) in the US, the Wii is about half the price of the PlayStation 3.
UK customers will be able to get hold of the Wii console on 8 December, retailing at £179.
The European launch of the PlayStation 3 will not take place until March next year, with prices yet to be released.