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Bring movement into it and watch how the balls pass on their energy and seem to defy physical laws - but prove them. Listen to the almost hypnotic, absolutely steady click-clack. Whether you drop two balls against the third, for example: The same number is repelled on the opposite side as if by magic, while the middle one stands still, or the expected three balls against two become three against three. Numerous amazing combinations provide surprises. Always try out new variations.