Abracadabra, presto, chango — your marble run just added some colorful, magical fun with the “GraviTrax Color Swap” accessory!

Bring a new element of surprise into your GraviTrax marble run! As if by magic, the marble changes color as it passes “through” the “Color Swap”. Simply hide a marble within the tunnel — the momentum from the incoming marble propels the hidden marble out the other side with the illusion the marble changed colors! It’s a snap to combine “Color Swap” with any “GraviTrax Starter-Set” to experience the power of gravity and educational fun today!

From Ravensburger, for ages 8 and up