Online since 2002. The most comprehensive site for all around twisty puzzles.

Screwing pieces
Barreled BoltA Floppy Cube with bolts that are screwed in and out of the puzzle during their turn.
Cross Screw CubeThe Screw 2x2x4 implemented three times.
Hexagonal Prism ScrewA 3-layer-Cheese combined with the mechanism of the Screw Cube.

Os CubeA 2x2x2 which uniform tiles retract or extended when the puzzle is turned.
Screw 1x2x3A successor to the Screw Cube but with a smaller cuboid as base.
Screw 2x2x2Screw 2x2x2 is a simplified version of the Screw Cube

Screw 2x2x4The concept of Screw 2x2x3 applied to a 2x2x4
Screw 2x2x5The concept of Screw 2x2x3 applied to a 2x2x5
Screw 2x3x3The concept of Screw 2x2x3 applied to a 2x3x3.

Screw CubeA 2x2x3 in cubic shape enhanced with threads to become a way more complex puzzle
Screw EnigmaEngel's Enigma with an additional dimension because of a screw like mechanism.
Screw HexThe principle of the Screw 2x2x2 applied to a hexagonal prism.

Screw Square OneA Square-1 combined with the mechanism of the Screw Cube.
Void Screw CubeA variant of the Slim Cube which outer upwards pieces that can be screwed up and down.

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