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

Moving: Tiles
Double LooperThree circles on one line, each allowing 180 turns with shallow intersections. Plus three additional inner circles almost of the same size as the outer circles.
Double LoticaA custom made Lotica enhanced by an additional circle.
Double Trouble (sliding)16 tiles moved by three plungers.

Double WeirdTwo samples of Weird Disk 6x6 glued by design onto each other.
Dual CircleDual Circle - surprisingly enough is two interlocking circles - pieces move when the circles are turned.
Dual716 tiles moved by two plungers. A custom made puzzle similar to Tri-Trick.

DuplexAn intersecting circle puzzle, but with a twist!
Duplex 2Two intersecting circles of which one can be twisted.
ELeVeN11 tiles moved by two plungers of different size.

Edge of InfinityA circle puzzle with two intersecting axes of rotation.
Edge of Infinity UnbandagedA partially unbandaged version of the Edge of Infinity.
EightTwo intersecting circles similar to the Lotica but of different size.

Elemental(Aluminium)A heart-shaped variant of Elemental(Fluorine) with four additional pieces.
Elemental(Argon)An enhanced version of Elemental(Beryllium-10)
Elemental(Beryllium-10)The third member of the series of Elementals. This time there are 4 plungers of which 2 are side by side.

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