Cubo DiabolicoSeems to be a copy from the original cube craze. The case looks like those ITC sold back then.
Cubo MagicoItalian cube advertising a world championship in Montecarlo on 30th september 1982.
Cubo Rubik's3x3x3 from 2014 by Hasbro, produced for the spanish market. Utilizes a pagoda style mechanism.
CuboctahedronA mass produced shape variant of the 3x3x3 from the original cube craze. The shape gave the puzzle its name.
CubophoneA 3x3x3 that is solved not by colour or shape but by tune.
Curvy CubeA curved 3x3x3. Stickers in a classic sticker scheme.
Curvy Maze CubeA 3x3x3 with a beautiful rounded and very innovative maze structure as stickers.
Cutter CubeThe concept of the Wall cube implemented with a 3x3x3
Cylinder 3x3x3A hexagonal prism 3x3x3 truncated down into cylindrical shape.
D. E. ShawA promotional cube featuring the company D. E. Shaw