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A MiniTrax that uses a trampoline in all 6 directions. The GraviTrax app code for this build is C4AS6LPM88. Here is a direct link: … source

Build working computers out of marble runs! Build a new digital logic circuit each week using the GraviTrax marble run system. source

Reset or reposition a switch using marbles with this trick. The repositioning marble travels backwards through the switch, and exits … source

Remembering our fallen with a Memorial Day marble run. Music is “The Stars and Stripes Forever” by John Philip Sousa, … source

I didn’t think this many GraviTrax Loops would work, lol. Watch the full video of this Pachinko marble run at … source

Have you ever wondered how a computer works? How it REALLY works? Introducing GraviCalc – a concept of using the Gravitrax … source

Build working computers out of marble runs! Build a new digital logic circuit each week using the GraviTrax marble run system. source

Sighting confirmed! The fabled blue box GraviTrax Speed Starter Set actually exists! Paid Links: Buy GraviTrax on Amazon: … source