Paladin cubeCould also be named curved deltoidal hexahedron.
Pandora CubeWorks like a 3x3x3 but with challenging new exterior.
Penrose 2x2x2The shape transformation of the Penrose Cube implemented with a 2x2x2.
Penrose Bump 4x4x4A Bump 4x4x4 (aka Mirror 4x4x4) truncated into three round surfaces in a spiral pattern.
Penrose CandadoA 2x2x3 placed in midturn and truncated into three round surfaces in a spiral pattern.
Penrose TriangleA 2x2x2 with extensions. Photographed from a certain angle it creates the illusion of the Penrose Triangle.
PentabarrelThree layers in a pentagonal prism with a star-like pattern.