Power BoxThe axis system of a 2x2x2 was reoriented inside its solid. The resulting pieces have all different shapes.
Praxicopter IIIThe axis system of an edge turning hexahedron twisted inside the cube. Resembling the Praxis cube.
Praxis CubeAn "axised" Rex Cube which was presented before the original puzzle.
Professor Square-1A five-layered version of the Square-1 puzzle. With additional slices: 20 instead of 12.
Proxy Cube (Mercury)In essence, a shape mod of a Crazy X-Cube. The first of the Proxy Fisher series.
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.
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.