The controller uses a microphone combined with visual and infrared cameras to control the onscreen action.
Two demos were on show at gamescom for people to try out, including a playable version of Burnout Paradise in which users control cars using an imaginary steering wheel, moving their feet forwards or backwards to control the speed.
Microsoft has allowed the public to get their hands on its new hands-free games controller for the first time.The US firm showed off the "Natal" technology, designed for use with its Xbox 360 console, at the European games convention gamescom in Germany.