Pink GearsA sticker variant of the Gear Cube Extreme to make the puzzle easier. It is still not trival though.
Plane Bump Square-1A Square-1 "bumped" in one direction. The puzzle's center was moved away from the solids center along one axis.
Platinum Cube Also known as "Master Golden Cube". A Master Skewb transformed like the Golden Cube.
Polyaxis Cube 2x2x2A 2x2x2 with the axis system rotated inside the cube. In this case the cube was rotated around one corner.
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.