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Six-Sided: Cuboid
I-Cube Bumpoid 2x3x3 (Extended)A 3x3x3 Bump Cube with the top two layers glued, and 3D printed extentions added to the sides.
Impossible 1x5x5 CuboidA 1x3x3 with additional layer attached. The corners are held in place with magnets.
Johns Hopkins 1x2x5Not a mass produced puzzle but customly 3D-printed.

Junior Mental FlopA Mental Flop reduced by one layer.
Keychain 1x2x3 (8 mm cubies)The smaller cousin of the 1x2x3.
King's CubeA cornerless 3x3x3 with additional pieces which gave it the look of a 3x3x5.

KolasA 3x3x3 bandaged and extended with cubies glued on.
KupalaA 3x3x3 bandaged and extended with cubies glued on.
L-Cube HybridThe L-Cube from Calvins Cuboid series with circles on two sides.

Lazy Man's 3x3x5One result of a piece exchange between 3x3x4 and cubic 3x3x5.
Loppy 2x2x3A 2x2x4 with one side removed.

Magic DominoThe 1982 Politoys version with a spindle mechanism.
Mahjongg DominoThis Domino shows symbols taken from the Mahjongg-game. Also exists as Black/White.
Master Mental FlopA Mental Flop enhanced by one layer.


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