Valve has announced that Steam Controller has sold, to date, over half a million units. Available since last November 10 at a price of 54.99 euro, the originaldevice allows you to make it more comfortable to use "from the couch" of videogames on PC through the use of configuration options avanzate.Date its particular characteristics, such as the use of the touchpad instead of the directional pad or the second right analog , the device requires a certain stage of initial adjustment in order to be exploited.Release Date: September 12, 2003 from the PC – Mac in March 2008 – April 2011 PS3