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Six-Sided: Cuboid
Rubik's 5x3 CubeThe Rubik's 5x3 Cube® is 5x3x3 six-sided puzzle that is hand-assembled and solidly constructed. From the Duane Cash Cube Collection.
Rubik's Tower (2x2x4 Cuboid)A mass produced 2x2x4 cuboid.
Rylox PrismA bandaged and extended 4x4x4.
A mass produced version is also available.

Rylox-ish floppyA 3x3x3 bandaged and modified to look like a Rylox prism.
Scramble (Super Floppy) CubeAn enhanced version of the Floppy Cube from the same inventor. A floppy cube where you can turn the faces 90 degrees.
Shape changeable 5x5x5 IA mass produced 4x5x5 modified to add another layer.

Shape changeable 5x5x5 IIA mass produced 4x4x5 modified to add another two layers.
Shape shifting 2x3x3This is a 2x3x3 that allows 90°-turns on every face and can therefore change its shape drastically. These new shapes do not lead into new scrambling or solving techniques for the puzzle.
Shapeshifting 3x3x6A fully functional 3x3x6. The pieces are deliberately designed to be unproportional.

Single Circle 3x3x3A Crazy 2x3x3 with one layer of cubies glued on the circles of one side.
Slide Twist Twist Slide The successor of "Twisted Assembly Puzzle" made for IPP33
Sliding SSQ-1The successor of Tony Fishers sliding Pucks. 6 layers of tiles taken from various Super Square-1's.

Slim CubeA 3x3x3 forced into the dimensions of a Floppy cube and thereby changing its solving properties.
Special 2x3x3Looks like a 2x2x3 but it is an enhanced hexagonal prism.
Specter CubeA fully functional 3x4x4 built by Mr. Watanabe and presented by Mr. Okamoto

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