Crazy CometA jumbling twisty puzzle based on the geometry of a Rhombic Dodecahedron.
Crooked-1A quick sticker variation created this midtwist puzzle.
Cross CubeA 5x5x5 without corners, wings and edges. The X- and T-faces are distinguishable.
CrossminxLike the Cross-Cube is a 3x3x3 with additional layers this puzzle is a megaminx with additional layers.
Crucifix CubeA 2x2x2 related to the Cross Cube but only to two dimensions.
Cube 3-compoundA hybrid puzzle which combines two axis systems and has a perfectly fitting shape.
Cube In SphereCross between Rubik's Cube and Rubik's Sphere. Hand crafted mutation cube.
Cubillusion PuzzleA 4x4x4 was extended to create an illusion of two impossibly fused 3x3x3s.