Sony Computer Entertainment America has revealed that sales of the PSP in the region rose 300 per cent in the three days following the launch of the PSPgo.

As well as an increase in hardware numbers, game downloads via the PlayStation Store also climbed 200 per cent, according to corporate communications director Patrick Seybold.

"The launch of PSPgo has generated strong consumer interest in the overall PSP platform and the PlayStation Network's digital content offering," he told Gamasutra.

"With several blockbuster games launching digitally and on UMD in the coming weeks - from LittleBigPlanet to Assassin's Creed Bloodlines - we expect this momentum to continue and look forward to a strong holiday season for both the PSPgo and PSP-3000."

Sony Europe said earlier this week that sales of the PSP hardware were up 120 per cent following the launch of new hardware, although retail partners such as ShopTo and Chips have been disappointed with sales due to a high price and no physical software.

In the UK, major retailers began discounting the hardware almost immediately after release, selling the PSPgo for £199.99, rather than the £224.99 asking price.