Void 6x6x6 is a twisty puzzle, inspired by Katsuhiko Okamoto's famous Void Cube, a hollow version of Rubik's Cube. This 6x6x6 version introduces a completely new way of turning, in which edges turn into the cube.

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A complet Void 6x6x6 requires
1x Set 1
1x Set 2
1x Set 3

Please contact Oskar directly if you are interested in obtaining a fully colored and assembled sample of this puzzle.

YouCube is a twisty puzzle in the shape of the letter "U". A dovetail connection keeps the two square faces together. Also the three sides and the small cubies can turn.

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These are two knots linked together. The two knots turn though eachother in a gearing motion in a 2x3 ratio.

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Polaroid Cube was suggested by Landon Kryger. It is a hollow spherical 2x2x2 Rubik's Cube. However, instead of stickers, it uses polarizing filter. The object is to turn the puzzle and make all three directions opaque.

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Please contact Oskar directly if you are interested in obtaining a fully colored, stickered (uh, polaroided) and assembled sample of this puzzle.

PantaBram is Bram Cohen's variation to PantaCube, which is Oskar's variation to Pantazis Houlis' Cubedron. The puzzles has five pyramids that slide through grooves around a sphere. The groove pattern is an ultra-simple maze, suggested by Bram. Because of this maze, pieces can slide only one at a time (unlike regular twisty puzzles). This puzzles is very hard to solve, despite its low number of pieces.

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Kilominx is an idea by David Litwin. He built his first Kilominx as a mod of a commercial Megaminx puzzle. The object of this puzzle is the same as for Rubik's Cube: scramble and solve.

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Jumble Rock is a jumbling twisty puzzle with an unusual geometry. Can you tell what it is?

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Jumble Pebble is yet another jumbling puzzle in the vein of Meteor Madness, Astroid Attack and Big Boulder. However, the geometry of this jumbling puzzle is an enigma. Can you find it at Wikipedia?

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Please order a 3D-printed do-it-yourself puzzle kit from Shapeways at this page (check with Oskar about screws and stickers), or contact Oskar directly if you are interested in obtaining a fully colored, stickered and assembled sample of this puzzle.

Void 5x5x5 a variation of Okamoto's award-winning Void Cube, a Rubik's Cube with missing centers. This version is completely hollow as well, and it has 24 peep holes to see the spherical void inside.

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Gear Snake is a concatenation of four 2x2x2 Rubik's Cubes. The puzzle is build around four commercial 2x2x2 Eastsheen cubes. Because of the gears, the four 2x2x2's interact with eachother in a quite unexpected way.

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Rotabram is a Doug-Engel-style flat twisty puzzle, conceived and designed by Bram Cohen and me. When parts are turned, the small gears are changing orientation and the black hexagons are broken. The object is to scramble the puzzle and then to get the puzzle back to its starting state.

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Shift Cube extends the concept of a 2x2x4 Rubik's Tower. Additional to functioning like a regular 2x2x4, there is also a shift move, which moves diagonally opposite sets of 8 cubies up and down. After the shift move, four cubies in the then middle layer can be turned as well. The puzzle is presented mid-shift, modded into a cubic shape.

Note that the puzzle is not super stable. Contact Oskar before buying, please.

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Please contact Oskar directly if you are interested in obtaining a fully colored, stickered and assembled sample of this puzzle.

Irreversible Cube is based on an idea by Christoph Lohe:
"It is just a 2x2x2 Cube, however, with the following constrains:
- only clockwise quarter turns are allowed
- after a turn on one axis (out of three), the next move, if any, will need to be done on another axis
Obviously, it is not a normal twisty puzzle as you cannot simply reverse your move sequence. It also means: the puzzle is already scrambled after a first single move from the solved state."

So if we encode
"U" = upper face 90 degrees clockwise
"F" = front face 90 degrees clockwise
"L" = left face 90 degrees clockwise
then one could legally turn e.g. "UFLUFLULUFLUFLUL" as all turns are clockwise and there are no two-same-turns-in-a-row. However, "FF" would be illegal and the second "F" move should be blocked.

Irreversible Cube exactly achieves Chris Lohe's goal. There are only single clockwise quarter turns, and any second quarter turn is blocked, only to be unlocked when another face is turned 90-degrees clockwise.

Note that the puzzle has no easy undos. Once a quarter turn clockwise has been made, one cannot undo it by turning anti-clockwise. Anti-clockwise turns are blocked by the mechanism.

Analysing the mechanism, the follow steps happen when turning a face clockwise.
1) First the turning face locks itself against turning back to it original position. From this point, one can only move forward.
2) Next the turning face unlocks the previously locked adjacent face.
3) Then, the turning face locks itself against turning back to the adjacent-faces-unlocking state.
4) Finally, the turning face blocks. Now it can only be unlocked by turning an adjacent face.

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Read at the Shapeways Forum.
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Read a solving analysis at the Twisty Puzzles Forum.

Please contact Oskar directly if you are interested in obtaining a fully colored, stickered and assembled sample of this puzzle.

Even Less Gears is a variation of my Gear Cube and Gear Cube Extreme, both produced by Mefferts.com. Gear Cube is a Rubik's Cube with 12 geared edges. Gear Cube Extreme is a more difficult version with only 8 geared edges. So why not taking this concept one step further and go for just four geared pieces?

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You can build your own Even Less Gears by buying a Gear Cube from Mefferts and add the eight non-geared pieces that you can buy from Shapeways at this page.

Gear Octahedron is a variation to the Gear Cube. Where Gear Cube has 6 gears, this one has 24.

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This model is not for sale. Unfortunately, it turned out a bit delicate, with pieces occasionally falling out.

Gear Skewb is based on the well-known tetrahedral/octahedral Skewb geometry. Twenty-four gears guide the rotation of this puzzle.

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Gear Skewb has the following parts.
-1x Set 1
-1x Set 2

Please contact Oskar directly if you are interested in obtaining a fully colored, stickered and assembled sample of this puzzle.

Gear Shift is based on an idea by Bram Cohen. This puzzle has eight gears around a cube. All gears can turn together. But it is also possible to pull the gears apart in two sets of four. Each set of four can be turned individually. And there are three ways to split the gears. The object of this puzzle is similar to Rubik's Cube: scramble it and then try to solve it.

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Please contact Oskar directly if you are interested in obtaining a fully colored, stickered and assembled sample of this puzzle.

Or buy the mass-produced version of this puzzle is mefferts.com.

Gift Cube is a fully functional Rubik's Cube with a spherical cavity inside. When solved, one layer comes off and the content can be removed from the cube.

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Watch Matthew and Mindy Farnsworth reenact their romantic proposal.
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Gift Cube is produced by Mefferts for Jade Club as Oskar's Treasure Chest.

Connected Cubes 2x2x2 are two 2x2x2 Rubik's Cubes that are connected by a gearing mechanism. This way, if you turn one of the faces of one cube, a face of the other cube follows.

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Caution Cube is a twisty puzzle like Rubik's Cube. Its edges have gears that connect opposite faces. Apply extreme caution when solving this novel twisty puzzle. The razor-sharp gears turn, so you can easily hurt yourself. Wear protective gloves and keep this puzzle away from children. This is not a toy!

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Please contact Oskar directly if you are interested in obtaining a fully colored, stickered and assembled sample of this puzzle.

Or buy the mass-produced version from Mefferts.com.

H-Cube is a twisty puzzle, related to the Rubik's Cube. It is possible to turn the H as a whole, its two legs and its four leg ends. If you get the H-Cube scrambled and you can't solve it, H-Cube has the feature that you can easily take it apart.

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Fairly Twisted is a twisty puzzle that defies all rules. It has seven turning faces, eleven edges and seventeen corners. It has some local five-, four- and threefold symmetries, but the puzzle as a whole has no symmetry whatsoever. The size (volume) of this puzzle is the same as a 6x6x6 cm Rubik's Cube.

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Please contact Oskar directly if you are interested in obtaining a fully colored, stickered and assembled sample of this puzzle.

Illegal Cube is a puzzle that should not be allowed to exist. This 'cube' has two corners and three edges too many, and two pentagonal faces. Still all types of turns seem to work. This puzzles is inspired by an idea by Jason Smith. Bram Cohen calls this type of designs 'fudged'.

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Redi Cube is a twisty puzzle, similar to Rubik's Cube. Here, the pieces turn around the cube corners. For the experts: the mechanism has some similarities with the Dino Cube and the Rainbow Cube.

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Please contact Oskar directly if you are interested in obtaining a fully colored, stickered and assembled sample of this puzzle.