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

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Crazy PyraminxA Pyraminx with circles on all four sides. It comes in four different configurations.
Crazy Radio CubeA Crazy Radiolarian transformed into a cube or a Crazy variant of the Radio Cube.
Crazy RadiolarianThe Crazy Icosahedron with slightly deeper cuts and therefore one changed piece type.

Crazy Rhombic DodecahedronA 3-layer face turning rhombic dodecahedron with circles
Crazy RhomdoA Crazy Comet treated like the Rhomdo.
Crazy RuaThe Rua with circles added to each face.

Crazy SixThe concept of a Circle cube applied to a 6x6x6.
Crazy SkewbA skewb with circles. Equivalent to the Crazy tetrahedron.
CrazyB4cubeThe Crazy 2-face enhanced with traditional bandaging. Sold as a kit.

Crescent DodecahedronThe Crescent Cube reimplemented into a dodecahedron.
Crystal BallA spherical Pyraminx Crystal with an additional set of independent layers on each face.
Crystal TransformerThe Rhomdo Transformer with deeper cuts for the face turns.

Crystal Trap A faceturning tetragonal trapezohedron. A jumbling only puzzle.
CrystalliteDesigned to be the Ripple Cube Plus but without curved lines it can't be part of the series.
Cube BouchonA 3x3x3 which opposite sides are connected with gears. These gears make the sides to twist in different ratios during one full turn.


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