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

2009
Crazy CometA jumbling twisty puzzle based on the geometry of a Rhombic Dodecahedron.
Crazy Cube (Square-1)A Star Prism caught in midturn and reshaped back to a hexahedron.
Crazy SixThe concept of a Circle cube applied to a 6x6x6.

CrossminxLike the Cross-Cube is a 3x3x3 with additional layers this puzzle is a megaminx with additional layers.
Crystal MagicA custom made 9-tiles-magics which uses stickers to illustrate its three solutions.
CubeClockA alarm clock looking like the Rubiks. It is not a puzzle because only one side can be moved to swith between the modes.

CubeRhombicDodecahedronCrossA cross between a cube and a rhombic dodecahedron. The more outreaching pieces from both puzzles were put into one puzzle.
Cubedron StandardA rotational-gravity puzzles based on a cubic structure.
Cubic 7x7x7A V-Cube 7x7x7 modified to give it a true cubic shape.

Cuboctahedron 6x6x6A 6x6x6 truncated into the shape of a cuboctahedron, an archimedean solid.
CybedronA sticker variant of the cubedron. It uses only two colours but is equally difficult.
DCD 2009 CubeA sticker variant given by Erno Rubik as gift to all visitors of the Dutch Cube Day 2009

Dancing GearsA puzzle with two intersecting circles. Produced in low quantity in four different variants.
Di-CubeA custom Magic with 12 tiles and two solutions.
Dino BarrelA rainbow cube transformed into an octagonal prism


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