10-10 VisionTwo circles intersecting with each other and allowing 10 steps per circles.
3 DiamondsThree vertical plungers and one horizontal plunger with one tile in each of the three intersections.
4x4 (Crossover)A rebuilt Crossover puzzle with a custom scheme on the tiles.
AlbireoFour intersecting circles of two pairs of differently split circles.
AldebaranTwo intersecting circles rotatable in six steps of unequal angle and a third circle rotatable by 72°.
AlgolA hard jumbling intersecting circle puzzle.
AlpheratzFour intersecting circles of two pairs of differently split circles.
Another Double LoticaA custom made Lotica with one additional circle and only half turns for the outer circles.
AntaresTwo intersecting circles with 109 pieces, named after one of the brightest stars on the sky.
AreciboA two dimensional version of the Radiolarian 3 or a bandaged variant of the Sirius.
AruslokyTwo rotating circles - very similar to the Cohan Circle puzzle.
AviorA doctrinaire puzzle consisting of two intersecting circles that can be turned by steps of 90°.
Awesome OctoRubik's like ring shaped puzzle. The puzzle turns the upper and lower half of the ring. The colours are separated in four sections.