Saturn cubeA ring of extensions normally used for a fisher cube applied to make up a ring around a 3x3x3.
SiaminxThe two Pyraminx share a single edge piece.
Spikes CubeA 3x3x3 with 24 small pyramids instead of stickers on the corner pieces.
Spiral Edges CubeThree columns of a Rubiks Cube exchanged with the columns of an Octagon. The result has a rare symmetry group.
Spongebob 2x4Burger King's 2 layer Missing Link type of puzzle, used to promote the Spongebob movie.
Super 5x5x5The 5x5x5 super group cube. Unlike the standard 5x5x5, each of the nine center cubies on each face has only one solved position and one solved orientation.
Swissmad12 tiles in red and white make up a scross in a red body. No sursprise that this puzzles comes from Switzerland.
Turbull TartanA custom made sticker variation inspired by the tartan cube.