Cube Minx IA Kilominx (or impossiball or corners-only-megaminx) transformed into the shape of hexahedron.
Cube Minx IIA megaminx transformed into the shape of hexahedron but with differently oriented axis system.
CubeminxA megaminx shaped like a pillowed hexahedron. Oriented differently compared with the Hexaminx.
CubeultimateA Pentultimate in the shape of a hexahedron, aka cube. Made by the inventor of the original Pentultimate.
Cubic 3x3x4 IIA mass produced 3x3x4 truncated and rebuilt into the shape of a cube.
Cubic 4x4x5 IAnother 4x4x5 but truncated into the shape of a hexahedron.
Cubic 4x4x5 IIAn 4x4x4 of Eastsheen modified into a cuboid which could have been a bandaged 6x6x6 as well. It does NOT change its shape.
Cubic StarminxA Starminx in shape of a cube. Sadly it is not a perfect shape variant.
Curvy HexaminxA redesigned version of the Hexaminx. This time with curvy cuts.
Cutter CubeThe concept of the Wall cube implemented with a 3x3x3.