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Six-Sided: Cuboid
Ozonic 1x2x3A 1x2x3 "reduced to the max".
Pancake cubeA 3x3x4 was transformed by removing some pieces and exposing some others.
Phantom CubeA fully functional 3x3x4 by Katsuhiko Okamoto.

Phantom Mirror blockThe concept of the Mirror Blocks applied to a 3x3x4.
Professor Mental FlopThe fourth mental flop, built up from a 3x3x5.
QuartetA four-sided puzzle comparable to the Grimace.

Rubik's 4x3 CubeThe Rubik's 4x3 Cube® is the incredibly addictive cousin of the Rubik's 5x3 Cube®. From the Duane Cash Cube Collection.
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.

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V-Cube 7 Dazzler

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Eastsheen 5x5x5 (Dome)
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Brain Twist
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