Online since 2002. The most comprehensive site for all around twisty puzzles.

Customly 3D printed
Robot 2x2x3A 2x2x3 transformed into the shape of a robot.
Rocking the Moon“Rocking the Moon”, a puck with a curved cut deeper than the origin and 11 segments.
RodiniaThe Dino Associahedron with two additional cuts.

Rolling OctahedronsThe puzzle consists of 6 identical octahedrons in a grid, each octahedron has 8 differtents colours on it. You can roll the ocatahedron into a vacant space. The object of the puzzle is get the final pattern from any initial.
Rolling pyramidsFifteen tetrahedrons over a grid. The tetrahedrons have to be rolled around to scramble and solve the puzzle.
Rolling pyramids V2Twenty-three tetrahedrons over a grid. The tetrahedrons have to be rolled around to scramble and solve the puzzle.

Rolling-Stones One Layer Square-1 PuckA shape modification of the One Layer Square-1.
Rompentrix, the Vertical SmileThis is a subset of the Starminx with two axes, both with a traditional cut and one cut deeper than the origin, in which a rhombus, pentagons and triangles appear.
Rota-RiusTwo very small circles and one plunger with six tiles.

RotaPlusThe Rotascope with the central piece unbandaged.
RotoPrism HexThree axes which sometimes allow for 60 turns.
RotoidFour intersecting circles making up an enhanced version of the Rotascope.

Rotoid PlusFour intersecting circles making up an enhanced version of the Rotascope, with two pieces split up further.
RoundaboutOne rotation with four rings of marbles that can be combined into one continous ring.
Royal DoderhombusA Royal Skewb transformed into a Rhombic dodecahedron


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