A few days ago we reported that Wii Sports Resort sold 150,000 copies on its first day on sale in Japan, then over 350,000 over the first four days, all were bundled with the MotionPlus peripheral. We also now know that the stand-alone Wii MotionPlus peripheral has sold 290,000 in the same period. The clever among you will have already calculated that there are now over 600,000 WiiMP units in Japan.

Not a bad start at all. Not long now until the rest of us can check it out either as July sees the launch of WiiMP in western territories.