Offset SkewbA Skewb with rectangular centers and four enlarged corners.
Oh CubeA puzzle looking like a 3x3x3 but it is indeed a corner-turning hexahedron.
Oskar's Danger CubeAn extension of the Caution Cube or Geared Mixup concepts - this time with more types of moves possible.
Overlapping Cube VariantA simple Overlapping Cube with an additional set of four edges exposed. This puzzle turns like a cuboid not a cube.
Perez's CubeLooks like a 5x5x5 bandaged into something equivalent to a 3x3x3 but it works similar to the Overlapping Cube.
Pillowed 5x5x5An Eastsheen 5x5x5 with extensions to change its shape into a pillowed hexahedron.
Proportional OhA proportional version of the Oh Cube, which is an earlier design of the same designer.
Puck 2/16Two 16-segmented circles on a 1x1x2.
Quad-XAn edge-turning hexahedron with cuts deeper than the Helicopter Cube.
Raptor CubeA Rex Cube newly designed to include the corners of a Compy Cube