The game was produced by leading Japanese studio Square Enix and makes use of a brainwave-sensing headset from NeuroSky, a San Jose-based company that develops biometric sensors and similar products aimed at the consumer market.

While playing the game, which is a technical demonstration and not a finished product, a special headset will monitor the user's state of relaxation or concentration and based on this allow them to perform certain actions in the game, NeuroSky said in a statement.

There's no immediate word on if this might make it into a commercial game, but the demonstration to be shown on Thursday is based on a new game concept being jointly developed by the two companies, NeuroSky said.

Stay tuned for a hands-on and more details when the Tokyo Game Show starts.