<http://schema.org/description>
"The great Infographics blog by Randy Krum presents this game controller overview - created by Damien Lopez. From one stick plus one button to a motion sensitive controlling device. ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/2009/01/19/thirty-years-of-game-controllers-evolution-and-its-victims/>