There are few things that can keep a certain kind of mechanically-inclined mind entranced as well as a marble run, and few structures that look as interestingly organic as procedurally-generated ...

There’s seldom anything as joyful and relaxing to watch as a simple marble run. Of course, the thing about letting marbles fall under gravity is that you eventually need to lift them back up again.

Which marble run is best? Marble runs are rolling ball sculptures you build yourself. You assemble tracks in all kinds of wild configurations and watch as the marbles roll down hills, around corners ...

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