asda instore are selling mini ninjas on all formats at great prices, the link will take you online but the prices online are different. instore they are
wii - £10
xbox360 - £12
ps3 - £15
not sure why xbox is less than ps3 but that one seems to be the best of all the 3 prices.
we got it for the wii this morning in asda norwich and they had loads of all formats.
Hope this helps someone.