Mindflex Duel from Mattel

The original Mindflex game challenged individual players to control a floating ball through a maze using just the power of their minds. In the new Mindflex Duel, you have the same action but for two players. Whenever you concentrate, you generate brain wave activity. Mindflex Duel uses a variation of EEG technology to "read" the intensity of brainwaves via sensors on the headset that are positioned on your forehead and ear. These sensors don&generate or interfere with brainwaves. They only read what is already there. The headset transmits a signal to a fan within the game console. The fan controls the ball levitation. Your brainwaves, in turn, control the power of the fan. The more effectively you concentrate, the stronger the fan blows and the higher the ball floats. Relaxing your mind relaxes the fan&airflow, which lowers the ball.