Canny UncubeA semi-cubic twisty puzzle with only five turning faces.
Carambole BilliardsThree spheres which pretend to be billiard balls fused into a single shape. Built ontop of a 3x3x3 mechanism.
Castle CubeA piece shuffle and a sticker variation of a 3x3x3
Check CubeA puzzle with four truncated and four extended edges.
Coffin SkewbA skewb transformed comparable to a Mental block but this time resulting in a coffin-like shape.
Column CubeA cornerless 3x3x3 with some cubies glued onto the edges.
Compound FractureCompound Fracture is a new puzzle based on the geometry of the Fracture-10, altered to allow 45 degree turns along 4 axis.
Compound-2-BallsA 3x3x3 which looks as if two spheres were fused into one solid.
Concentric CubeThree 2x2x2's in one puzzle. Some of their corners are fused to each other.
Concussion CubeA shape variant of the extended-only 3x3x5. It inverts the capsule cube.
Cornerless CubeA custom made cornerless cube without any remnants of the corner pieces visible.
Crazy 2x2x2A mass produced cross cube built with pieces from the Super 2x2x4.
Crazy CometA jumbling twisty puzzle based on the geometry of a Rhombic Dodecahedron.