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

Sílex cubeA 3x3x3 truncated on six edges and afterwards extended. Unlike the variant with Sharp Edges the cuts are rounded.
Silver Plating CalendarA calendar cube based on cut-out stickers for a cube with silver body.
Simon's CatDepicting the comic.

Simple Overlapping CubeA 3x3x3 without edges.
Single Solution OctagonA handbuilt octagonal prism but not as heavy truncated as the mass produced version.
Six CubeAn edges only 3x3x3 in shape of a Burr Puzzle.

Six Windmills CubeA doctrinaire shape-variant of a 3x3x3 with Windmill Cube faces on all six sides.
Six-pointed Star 3x3x3A 3x3x3 in shape of a star with six tips.
Sixcone 3x3x3 V1A 3x3x3 truncated with six intersecting cones in a shape closely resembling the Steinmetz solid.

Sixcone 3x3x3 V2A 3x3x3 truncated with six intersecting cones. This time resulting in a heavily concave solid.
Sixties CubeA large, sixties tye-dye cube with sixties symbols.
Sixties Cube Key ChainThis key chain sized version has slightly varied graphics, and the sides are arranged differently.

Skewed Cube (Sharp Edges 12000000)A 3x3x3 truncated on 2 edges and afterwards extended. The result has the shape of a rhombic prism.
Skewed Hexagonal Prism (Octagonal Edges 21E8A00145E10 Extended)A 3x3x3 truncated on 8 edges and then extended. The shape is a skewed hexagonal prims.
Skull cubeA skull-like inequilateral 3x3x3.

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