PSP sales double in Japan

Sales of Sony's PSP have more than doubled in Japan, with the console selling 184,610 units for the week ended December 16, compared to 91,481 units the previous week.

The boost in sales comes without any significant new PSP software releases during the period, with only three games for the handheld in the top fifty best-sellers.

However, Nintendo's DS is still leading hardware sales in Japan with 222,144 units sold in the past week, backed by 28 games in the top fifty.

The Wii has shifted 170,558 units according to data from Media Create, with the PS3 selling 63,720 and the PS2 18,025 units.

Sales of the Xbox 360 are still under 10,000 units with Microsoft shifting 8,561 units.