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

Calvin's Puzzle
Void Dino CubeThe first Void Dino Cube in the world.
Walled Fisher Windmill (WFW) CubeTwo layers of a Fisher Cube combined with the middle layer of a Windmill Cube.
Windmill Wall Cube ITwo layers of a Windmill Cube combined with a 3x3x3.

Windmill Wall Cube IITwo layers of a 3x3x3 combined with a Windmill Cube.
WindwallA 4x4x4 shaped to be a combination of Windmill cube an Wall cube.
Wisdom Ball - AdvancedSix rotating disks with eight numbered tiles each and one moving hole.

Wisdom Ball - BreakthroughSix rotating disks with eight numbered tiles each and one moving hole. This version is somewhere between ADVANCED and the traditional puzzle.
X-Cube (Crossoid)A 3x3x3 with additional layers on four of its sides. It became a member of a whole series similar to the Crazy Plus 3x3x3s.
X-Cube HybridThe X-Cube from Calvins Cuboid series with circles on two sides.

Yummy Cheese HamburgerA 3x3x3 UV printed wwith images of the namegiving fast food.
Yummy Double Heart Chocolate CakeA 3x3x3 UV printed with images of the namegiving fast food.
Yummy French FriesA 3x3x3 UV printed wwith images of the namegiving fast food.

Yummy Icy COKEA 3x3x3 UV printed wwith images of the namegiving fast food.
Yummy Strawberry Sundae Ice-creamA 3x3x3 UV printed with images of the namegiving fast food.

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