Rapture Dino CubeThe geometry of the 60°-moves-corner turning hexahedron implemented twice in one puzzle.
RaskewbThe Mental Box after a 180° turn reshaped into a cube.
Razer CubeThe concept of the Pocket Cube implemented with a 4x4x4, asymmetrically.
RB Square-2The concept of the "Marcos Square-1" applied to a Square-2: A Square-2 in midturn transformed back into cubic shape.
Rex Ghost CubeThe concept of the Ghost cube applied to the Rex cube. This time with differently coloured stickers.
RosetteA deeper cut cousin of the Clover Cube.
Rotoskewb IIThe successor of Rotoskewb implements the true concept the original idea giver had in mind.
Santa SpinA combination of a 2x2x2 and an eight different interlocking puzzles.
Screw CubeA 2x2x3 in cubic shape enhanced with threads to become a way more complex puzzle
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