Wall Tower CubeA 2x3x3 truncated on two sides and stickered as a midturn puzzle.
Watch Tower CubeA cornerless 3x3x3 with additional pieces which gave it the look of a 3x3x5 with holes.
Windmill FloppyThe concept of the Windmill Cube applied to the Floppy Cube.
Wring (扭)The Slice Cube implemented with a 2x2x2 in shape of a cuboid.
X-BlockA Skewb extended on two sides to give it twice the length.
X-SkewbA face-turning octahedron transformed into a cuboidal shape. A shape changing puzzle.