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

Lion King Puzzleball IIThis version shows Mufasa, Sarabi, Timon and Pumba in 3D relief.
Lion King Puzzleball IIIThis version shows Simba, Nala, Banzai, Shenzi and Ed in 3D relief.
Marvin The MartianA 2x2x2 puzzle in the shape of Marvin the Martian's head.

Master CubeMeffert's 1999 version.
Master Cube 2018Another 4x4x4 produced without stickers but a black rim.
Master Cube, TiledMefferts 1994 edition of the 4x4x4. With tiles instead of sticker.

Master Pyraminx (pillowed)Pillowed Master Pyraminx. Mass produced by Mefferts.
MastermorphixA higher-order Pyramorphix. A 3x3x3 transformed into the shape of a tetrahedron.
Meffert's Challenge - Prof. CubeGuide book sold with the 5x5x5 by Mefferts

Meffert's Challenge - PyraminxGuide book sold with the Pyraminx by Mefferts
Meffert's Challenge - Skewb CubeGuide book sold with the Skewb by Mefferts
Meffert's Challenge - TetraminxGuide book sold with the Tetraminx by Mefferts

Mefferts 1982 CatalogueIncludes a number of puzzles that were never produced.
Mefferts Challenge - Creative 3D Puzzle BallGuide book sold with the 3D Creative Puzzleball by Mefferts
Mefferts Challenge - ImpossiballGuide book sold with the Impossiball by Mefferts

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