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Ten Billion Barrel (8 layers)A ten billion barrel with eight layers which gives four times the size of the original puzzle.
Ten Billion Barrel (Junior)A ten billion barrel with one layer and 10 beads removed.
Ten Billion Barrel (Master)A ten billion barrel with an extra layer including 10 additional beads.

Ten Billion Barrel (Professor)A ten billion barrel with two extra layers including 20 additional marbles.
Ten Billion Barrel (medium)A version of the Ten Billion Barrel of smaller size and unknown origin.
Ten Billion Barrel - 42 mmA very small version of the ten billion barrel with key chain.

Ten Billion Barrel Key ChainThis keychain version stands at about 30 mm.
Ten Billion Barrel X4 (10 layers)A ten billion barrel with ten layers which is five times the size of the original puzzle.
Ten Billion Barrel X7A ten billion barrel with fourteen layers which is seven times the size of the original puzzle.

Ten Cube - 10 mm world's smallest 3x3x3 Rubik's cubeIn December 2010 the cube got into Guinness Book of Records as the smallest cube in the world!
Ten PuzzlerAnother octagonal prism, this time from japan.
Ten billion 2/3A ten billion barrel with only two colums to push the marbles up and down.

Ten billion barrel with restricted movesA ten billion Barrel with two rods extended by the size of one marble.
Ten billion holeA Nintendo ten billion barrel transformed into a varikon puzzle.
Ten billion magazineA magazine from the early 1980s.


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