This reworking of the Rubik's Cube is ostensibly to let the blind enjoy the blood pressure-destroying fun of screaming "Well, goddammit!" and hurling the Cube across the room after Attempt #4,181 fails. Only high level ninjas can truly smackdown the Cube. The site states that the six textures involved here are "metal, wood, textile, rubber, plastic and stone," which--of course--everyone knows were the names of the badass ninja teachers of the title character in Frank Miller's Elektra: Assassin.
Found via Gizmodo.