Offset HexAn offset version of Minimal Hex that makes six triangles disappear.
Offset OctaA puzzle related to Minimal Octa reimplementing Star Trap in a minimalistic way.
OneWorld by JD EdwardsA sphere with mechanism of a skewb which advertises a software from turn of the century.
Opusball - ConstellationsA remade equator puzzle. This variants shows the (western) zodiac symbols on the twelve middle pieces.
Opusball - ZodiacA remade equator puzzle. This variants shows the chinese zodiac symbols on the twelve middle pieces.
Other 4x4x4 (aka Puzzle 19)Designed to be a 4x4x4 with exposed new theoretical pieces. Although it has 64 pieces it presents itself as a superset of the 3x3x3.
Penta MysteryA hollowed sphere with a 5-fold-symmetry. Another entry in the series that started with Rocket Twist.
PentaballA pentagonal prism in shape of a sphere.
Pentacle ballA Pentacle Cube truncated into the shape of a sphere.