Dreams of Danu is a neurofeedback games developer.
In their words:
“We make games that you play with your thoughts and feelings.
You can control our games with sensors that read your brainwaves.
By wearing a headset like the Epoc neuroheadset or the NeuroSky MindWave, you can connect your mind to the game.”
The UK's Leading Brain-Computer Interface, Neurofeedback & Brainwave Controlled Gadget Source 