Everyone remembers the 'Wii Fit Girlfriend' who caused an Internet storm after her boyfriend filmed her Wii Balance Board hula hooping and uploading it to YouTube for the world to see.

Now one Japanese developer has gone one step further, marketing a whole game with a focus on scantily clad women performing an aerobic workout.

Released before Christmas in Japan,  Momu-Chan Diet: Figurobics is based on the fitness program of a well-known Korean personality.

No Balance Board support, unfortunately (you'll have to stick to ordinary Wii Fit for that), but worth flagging as being one of those 'Only in Japan' moments.