OlympiumFive intersecting circles rotatable in four steps.
One At A TimeTwo intersecting rings with three non-intersecting circles connected by gears.
Orlov TwoTwo circles and irregular center pieces.
OrpheusA hybrid of 2x2x2 and DeCETH.
Osnik PrismHexagonal prism with three turns per side and two seperate groups.
Outlander 2D-1First member of the outlander family, puzzles with intersecting circles based on a rune known from the Outlander movie.
Outlander 2D-180A variation of the Outlander 2D-1 model which has now been made symmetrical.
Outlander 2D-2Second member of the outlander family, puzzles with intersecting circles based on a rune known from the Outlander movie.
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