DIY Marble Run: Marble Night City science but not messy

but not messy

which also get placed onto the town board

that's our way of saying DON'T EAT THIS BIRTHDAY CAKE IT'S NOT FOR EATING AND IT WON'T TASTE GOOD

then subtract points based on how many spaces are uncovered on their quilt board

Once you're done

DIY Marble Run: Marble Night City science but not messyBuild your own massive marble run! First, you'll have fun putting it together; this wooden marble run takes about 7 hours to assemble while following the included instructions. Then, you can crank away and watch the marbles run over and over down the epic track! Recommended for ages 14 and up. 12 x 9 x 2 inches !\ WARNING: CHOKING HAZARD Toy contains a marble. Not for children under 3 yrs.