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

Rotational Gravity
AquadronWorld's first rotational-gravity puzzles based on a cubic structure. This puzzle is filled with water.
Cubedron ClassicA rotational-gravity puzzles based on a cubic structure.
Cubedron StandardA rotational-gravity puzzles based on a cubic structure.

CybedronA sticker variant of the cubedron. It uses only two colours but is equally difficult.
DoTSA "sticker variant" of the Cubedron concept.
Frozen FruitA dodecahedron-based cousin of the cubedron.

KrystalledronWorld's first rotational-gravity puzzles based on an icosahedron structure.
OctedronSeven pyramids in a transparent sphere moved by rotating the sphere to let the pyramids flip into the single hole.
Oginov TumblerThe 2011-version of the Cubedron. New company and improved product.

Penta WindmillThe cousin of the Windmill puzzle with five arms.
Puzzle Ninja PuzzleA successor of the cubedron. With tetrahedral shape. Also known als Trihx.
TumblerGently roll to get small beads to their own arms. In other words: Match the colour of the beads to colour of arms.

WindmillA token-dropping puzzle with three arms and five pieces that are moved by gravity when the whole puzzle is turned.
Windmill DuoAn improved version of the Windmill with a spring on a switch that has double the size.
Windmill TooAn improved version of the Windmill with a spring on the switch in the middle.


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