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

Six-Sided: Cube (Shape Preserving)
Skewby Copter UltimateA Combination of Fractured Curvy Copter III Plus and the Skewb.
Skewby DuoThe face pattern of Rob's Tetrahedron (Pyraminx Duo) applied to a hexahedron, and named to evoke childhood memories.
Slice SkewbThis puzzle combines a Skewb and Slice-Only 3x3x3.

Slidey 2x2x2It looks similar to a Babyface puzzle but it works like an edges only 3x3x3.
Sliding Super Square-1A Square-1 with only three layers but with a modified core that allows the sliding move.
Solver's ChopA heavily restricted Super Z, redesigned for the sake of proving a mathematical point.

Split Leaf DinoAn elaborate equivalent to the Rainbow cube.
Spotted CubeA contur cut 3x3x3 inspired by the Valentine Cube.
Star Circle CubeA circle cube with pentagonally divided circles.

Star Cube IIThis puzzle combines Compy Cube with six faces resembling the megaminx.
Stone SkewbA uniformly coloured Skewb looking like stone.
Sudoku Dino CubeA sudoku variant of the classic Dino cube with a surprising constraint.

Sun Cube IILooks like a Sun Cube but uses a completely different axis system.
Super 3x3x3 Mixup PlusA modification of the 3x3x3 Mixup Plus in the form of a cube-sphere and in which each piece is intended to have a unique position and orientation.
Super Babyface 3x3x3A scrambable 1x1x1


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