Particle Editor and Inner Tube are 3D environments that respond to your mind and body.

These games use 3 finger sensors to read your heart rate and skin sweat.

These measurements can be used to determine your stress levels.

This stress level information is shown to you using line-graphs, beautiful 3D graphics and original music.
 

Using this information you can:

Learn to relax.

Learn to generate positive emotional states.

Directly control beautiful 3D graphics and games with your mind.

Have fun playing games that have positive healthful effects.

Understand how your thoughts affect your body and emotions.

Get immediate feedback as to which thoughts create and which thoughts remove stress.

Test relaxation techniques and see if they work for you.

Instantly relax in daily stressful situations.

Train your mind and body to get in the habit of relaxing.

Train yourself to enter new levels of wonderful, deeply relaxed and pleasurable states.