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

Moving: Marbles
Rubik's ShellsA puzzle with four, three or two wheels. Depending on the configuration.
Russian RingsTwo intersecting rings of moving marbles plus two intersecting circles.
Sandwich TrackThree tracks of 20+24+20 marbles plus four elements of the puzzle turnable by 90° to exchange the marbles.

Screwball (Natural)Four rings of eight balls each.
Silver OrbA CADed relative of the "The Orb" with five rows of marbles instead of four.
Space MassagerAn elusive puzzle dating back to the times of the original puzzle craze.

Space Massager IA variant of the Space Massager. This one has crossed lines in the cupolas and three layers.
Space Massager IIA variant of the Space Massager. This one has three parallel lines in the cupolas and two layers.
Space Massager IIIA variant of the Space Massager. This one has a single line in the cupolas and four layers.

Space Massager IVA variant of the Space Massager. This one has two parallel lines in the cupolas and one layer.
Space Massager VA variant of the Space Massager. This one has a single line in the cupolas and two layers.
Space Massager VIA variant of the Space Massager. This one has three lines in the cupolas and two layers.

Space Massager VIIA variant of the Space Massager. This one has four parallel lines in the cupolas and two layers.
Spaghetti JunctionFour rings with seventy marbles in total, unconnected but exchangeable.
Speed spin TriangleSix circles of moving marbles on two sides with five rotations.


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