In comparison, the original Wii sold 371,936 units during its launch weekend in Japan, and Wii Sports was the top selling launch title with 176,880 copies (note: while it was bundled with Wii hardware elsewhere, Wii Sports was sold separately in Japan).
As well as not making quite as strong a debut as its predecessor, Nintendo's next-gen console also failed to beat the debuts of its handhelds Nintendo 3DS (371,326), Nintendo DS (441,485) and Game Boy Advance (611,504).
Overall Wii U is Japan's 7th best games hardware launch, also coming behind PS Vita and PlayStation 2.
In the US Nintendo claimed 400,000 Wii U units sold during the system's first week of availability (compared to 600,000 for the original Wii).
In the UK Nintendo reportedly sold about 40,000 Wii U units during the system's first 48 hours of availability.