I love the idea of placing the movable fields into 3d space and connecting them. Controls are very good, both controller and mouse - feels good. It was frustrating not being able to see where the next key is - I understand that this is the "fog of war" thing. But in a virtual 3d space on a 2d screen I have a hard time to get the feeling of the space, where I was and where I wasn't to find the "keys". Still, great idea and solid implementation. I like that you included various backgrounds and different music.