Collider DodecahedronA face turning pentakis dodecahedron in the shape of a regular dodecahedron. A jumbling only puzzle.
Collider-10A face-turning pentagonal dipyramid with curved cuts.
Combo CubeA combination of Peters Black Hole and the Rubiks Cube.
Combo CurFaTRhoDoA hybrid puzzle with two axis systems in the shape of a rhombic dodecahedron.
Combo CurFaTRhoTriA hybrid puzzle with two axis systems in the shape of a rhombic triacontahedron.
ComboctahedronA hybrid puzzle. It looks like the face turning octahedron and the magic octahedron but allows the moves from both puzzles.
Compass CubeA strangely bandaged 3x3x3. It unintentionally is the first physical implementation of something very close to the imaginary pieces.
Compino SkewbA hybrid of a Curvy Compino and a Skewb, a corner turning cube with 4 logical layers.
Complex 3x3x3An implementation of a 8-years-old dream. A 3x3x3 with six additional pieces types known before only through geometry.