Online since 2002. Over 3300 puzzles, 2600 worldwide members, and 270,000 messages.

Moving: Hole
ClockwiseTwelve moving pieces on a circle with two possible holes.
Coca Cola Classic CanA tile-sliding puzzle with the shape and design of a Coca Cola Classic can.
Coca-Cola KeychainA key-chain-sized sliding tile can.

CodebreakerA moving hole puzzle where you can can twist the 4 corner tiles all at once.
Color Cube PuzzleEight cube in a case with nine possible slots. The cubes have to be rolled around to scramble and solve the puzzle.
Color Puzzle GameA version of "row by row" from the former soviet union.

Color PuzzlerThis large, hex-shaped, 6x6 Whip-It type puzzle is about 120 mm tall.
Color-slideA more complicated moving-hole-puzzle.
Combo CubeA combination of Peters Black Hole and the Rubiks Cube.

Crash Dummies CanA puzzle can obviously produced as advertisement for a car safety campaign.
CrossteaserRotate color wheels into the open space to move
Crystal Million PuzzleAn undated puzzle from china with four rows and six colums.

Crystal Puzzle SixA custom modification of "Crystal Million Puzzle" with six layers instead of four.
Cubedron ClassicA rotational-gravity puzzles based on a cubic structure.
Cubedron StandardA rotational-gravity puzzles based on a cubic structure.

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