http://www.mindball.se/

In was back in October 2001 researchers at the Swedish Interactive Institute had created a prototype called Brainball and now they wanted to discuss an assignment; a market research for the prototype in order to find out if it had launch potential. The potential was there all right, but it was the prototype itself that fascinated us; an orange table, two headbands, two players and a screen. You were to move a physical ball with your brain waves alone. The winner was the one who was the most relaxed. It was as simple as fascinating!