Microsoft's not the only one to achieve some market penetration with its newfangled motion controller contraption -- Sony has announced that in the two months the PlayStation Move has been available in Europe and North America, and the one month the device has been on sale in Japan, the core Move controller has sold 4.1 million units.

Considering the PS3 has sold 41.6 million units to date, that means one out of every ten homes that has Sony's gaming console now also houses a Move. Or, since the Move really works best with a second controller in hand, it could mean that one out of every twenty homes owns two of the devices. Or, perhaps less likely, one out of every thirty PS3-owning families contains three Moves, for their freakish, three-armed children.