RoundaboutOne rotation with four rings of marbles that can be combined into one continous ring.
Roux CubeLooks like a reimplemented Tie Cube but is a 3x3x3 with a new type of bandaging.
Rubbik's CubeA 3x3x3 with pieces covered with Polytek Poly PT Flex 20 Liquid Casting Rubber.
Rubik's CageA 3D version of TicTacToe based on a Rubik's Cube scheme.
Rubik's EdgeAnother version of the Scramble Cube, marketed under the official Rubik's brand.
Rubik's TiltA hand-held electronic version of the 3x3x3, controlled by motion.
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