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Six-Sided: Cube (Shape Changing)
Professor Axis CubeAn "axised" Eastsheen 5x5x5.
Professor Ghost CubeThe higher order brother of the Ghost Cube. Made from a 5x5x5.
Professor Mirror BlockThis is a shape modification of a 5x5x5 cube that implements the same concept as the Mirror Blocks (aka Bump Cube).

Professor Square-1A five-layered version of the Square-1 puzzle. With additional slices: 20 instead of 12.
Professor Windmill CubeA 5x5x5 twisted inside of its solid. Katzuhiko Okamoto's concept applied to a 5x5x5.
Project ShiftA Ghost version of the 1x2x3 2x2x3 mashup.

Proxy Cube (Mercury)In essence, a shape mod of a Crazy X-Cube. The first of the Proxy Fisher series.
Pseudo Mirror CubeA very clever "sticker variation" of a transparent 3x3x3.
PuckubeA puck heavily extended into a hexahedrons shape.

PycubroA Pyraminx with heavy extensions and a batch of additional volume to give it a true cubic shape.
PyracueA Skewb variation built by Hiroshi Ishino and presented by Katsuhiko Okamoto.
Quad 3 Bump CubeA Horror Bump Cube bandaged like a Bandaged 3.

Quad 3 Horror Bump CubeA Horror Bump Cube bandaged like a Quad 3.
Quirky CubeA puzzle which reminds one of the Square-1 but introduces a whole set of changes to the original set.
Radio Cube 3A Radiolarian 3 (a face turning icosahedron) redesigned to have the shape of a cube.

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