Unleash the excitement of an insane multi-level marble run, complete with a giant elevator that adds a jaw-dropping twist to the race. Watch as marbles ascend through multiple levels, navigating ...

Ready to take your marble run to the next level? Learn how to make an exciting marble run with a working escalator using just cardboard! This DIY guide walks you through the process of designing ...

Overall, the build features a relatively simple marble run. It consists of just six 3D printed ramps which the marble tumbles down in just a few seconds.

And to get a sense of its popularity, that initial marble run (which was not mechanically looped) has already garnered close to 1.2 million views. Marble Run Alternator Test.