Mental PillowA skewb shaped like a pillow and rotated inside the solid.
Quarter CubeAlso known as Latch Cube II. Another design by the famous Katsuhiko Okamoto.
Rubik's EdgeAnother version of the Scramble Cube, marketed under the the official Rubik's brand.
Scramble (Super Floppy) CubeAn enhanced version of the Floppy Cube from the same inventor. A floppy cube where you can turn the faces 90 degrees.
Torus CubeThe direct successor of Katsuhiko Okamoto's most famous cube, here in a remade version from Zsolt Árpád Papp.
Void CubeA 3x3x3 with a hole through the center.
Windmill FloppyThe concept of the Windmill Cube applied to the Floppy Cube.
Windmill Wall CubeA 3x3x3 variation built by Katsuhiko Okamoto. It is similar to the Windmill puzzles but with 2 pieces interchanged.