Nintendo's new handheld the 3DS scored 371,326 sales in its first two days of Japanese availability.
Reports Famitsu (via AndriaSang), this means the initial run of 400,000 units almost sold out entirely.
A further 1.1 million SKUs are due in Japan by the end of this month, with Nintendo estimating four million sales worldwide over March.
The best-performing launch title for the handheld was adventure game Professor Layton and the Miracle Mask, which managed 117,598 sales over the weekend just gone.
The 3DS launches in Europe on March 25, and reaches America two days later.