The Skewb Ultimate, originally marketed as Pyraminx Ball is a twelve-sided puzzle derivation of the Skewb, produced by famous toy-maker Uwe Meffert. Most versions of this puzzle are sold with six different colors of stickers attached, with opposite sides of the puzzle having the same color.

The Skewb Ultimate is made in the shape of a dodecahedron. Each face is cut into 4 parts, two equal and two unequal. Each cut is a deep cut: it bisects the puzzle. This results in 8 smaller corner pieces and 6 larger "edge" pieces.

The purpose of the puzzle is to scramble the colors, and then restore them to the original configuration.