Online since 2002. Over 3300 puzzles, 2600 worldwide members, and 270,000 messages.

Moving: Marbles
Cmetrick9 spheres arranged in a 3x3 square. Spin rows and columns to position them in the same orientation.
Cmetrick Classic MiniThe smaller version of CMetrick.
Cmetrick TooEach of the four spheres has to have its own color.

Color Exchange20 pieces on two separate rings and one moveable plunger.
Columbus TojàsA puzzle in the line of the Space Massager or the Leesho.
Copper OrbA CADed relative of the "The Orb" with three rows of marbles instead of four.

CrazyBalls 2x2x2A three dimensional version of CMetrick.
Diamond Bob's Billiards 8 Ball PuzzleArrange the 8 pool balls in numerical order.
Diamond Bob's Billiards 9 Ball PuzzleA true sequential movement puzzle. The 10 "balls" move around on a non-trivial track.

Digit Rotations20 pieces on two intersecting rings.
DoppelkreisA derivate of the hungarian rings with less marbles in only two colors. It resembles the original patent from 1893!
Duplex 3Two circles of marbles that would not intersect if it weren't for the twist of the Duplex puzzles.

EntrapmentA strange puzzle with moving marbles that came in two different versions.
Figure EightA derivate of the Hungarian Rings from the soviet era.
Five CirclesFive separated circles with 17 marbles each. Connected by two giant concentric circle.

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Rubik's Void

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Brain Twist
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Eastsheen 5x5x5 (Dome)
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