While easy with single Steel Balls it's getting much more tricky with some of them joined together. The goal is to build a symmetrical pyramid shape without any parts left over.

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More cool puzzle shops I do recommend:

US:
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https://www.artofplay.com/?rfsn=60833...
https://www.creativecrafthouse.com (10% discount by using voucher "Mr Puzzle")

Europe:
https://jpgamesltd.co.uk/?tracking=5b...
https://www.knobelbox.com/?sPartner=m...
https://www.logicagiochi.com/?utm_sou...

Asia:
https://www.siammandalay.com/?ac=mrpu...

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