Journey to the Wild Divine

I liked journey to wild divine as an experiment, and as entertainment, but not for biofeedback.
Wild divine is not truly biofeedback because it does not provide feedback.
It is true that there are sensors that measure two biological factors, skin conductivity and heart rate. Note that this does not include any kind of brainwave monitoring. From these two factors, though, they can derive other functions, such as heart rate variability, which actually may reflect some degree of emotional state. (This is hard to prove, though, because I have a great HRV when playing violent video games, an act which should theoretically destroy any peaceful vibes.)
However, the game tends to mask what is going on by covering it with a layer of mystical jargon.
Because you never really know what you are trying to control, and what affects it, this does not qualify as feedback.
If, however, you get the grapher expansion pack, then it does qualify, because the grepher pretty much tells it like it is.
The game does teach you some good breathing techniques, which are extremely valuable to me, as they help me fall asleep far better than pills.
Overall, the game would have been much more useful, though, if they had just been honest and told you what was going on instead of being mystical about it.
That being said, I enjoyed the program, and thought the sequel, wisdom quest was even better. Wisdom quest was better, in my opinion, because it uses the biofeedback aspect as a part of the control, but not the sole method. I could really see video games being improved by adding similar controls.
About the worst thing about this set up is the interface, known as the light stone. You have to wear it on three fingers, which is pretty lame. If you move your fingers you can get bad results. So can not moving your fingers. Even people with good circulation will have to take the sensors off and get their hands back to normal before attempting any of the games you encounter.
People with bad circulation will fare far worse. They say to keep your hands warm, put a towel over it, etc, but if you get stuck on a challenge, you have to take off the sensors and shake out your hand, guaranteed. For this reason, I would wait to buy this game until they come out with a headband, which they should have done from the beginning.