Nice work! I've tinkered with this idea a bit in an unpublished project. How do you handle the singularities at the cube corners where three faces meet?
This gesture would often work for me in lucid dreams-- look away to refresh content. And when I played video games more regularly, my dreams would take on a procedurally generated quality that always struck me as more than the typical abstract dream imagery. It was as if my mind had learned a basic game engine with mechanics, physics and various rendering techniques.