AlgolA hard jumbling intersecting circle puzzle.
AruslokyTwo rotating circles - very similar to the Cohan Circle puzzle.
Bandaged QuadFour intersecting circles rotated with the help of plungers restricted in their movement.
Battle GearsA puzzle with intersecting circles and bandaged pieces. Produced in low quantity in seven different variants.
Bubbles in a planeA 2D-puzzle that works only because it was fudged and still it demonstrates jumbling.
CapellaA hard jumbling intersecting circle puzzle.
Cohan CircleTwo intersecting circles. There exists a newer relative named Arusloky.
Crazy TrioFour intersecting circles with a bunch of cuts.
Dancing GearsA puzzle with two intersecting circles. Produced in low quantity in four different variants.
DuplexAn intersecting circle puzzle, but with a twist!
Duplex 2Two intersecting circles of which one can be twisted.
EightTwo intersecting circles similar to the Lotica but of different size.