Online since 2002. The most comprehensive site for all around twisty puzzles.

Unequal Fisher CubeA fully bumped Fisher Cube.
Unequal WindmillA Windmill Cube bumped on all three axes.

Unique-1A truncated and extended 3x3x3. The cuts are placed arbitrary by purpose.
Unique-2A truncated and extended 3x3x3 without any kind of symmetry or regularity.
Uniroyal CubeThis Uniroyal cube only has markings on one side.

Unknown Cat Playing SoccerDepicting an unknown cat character playing soccer.
Unknown Dog Character IAnother 3x3x3 with mysterious cartoon dog character.

Unknown Dog Character IIAnother mysterious cartoon dog. The art on this one looks a little Japanese.
Unknown Japanese CubeA 3x3x3 of japanese origin, presumably from the original cube craze.
Unknown Japanese Cube IIAn unknown cube of japanese origin.

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