Take marble run play to the next level with the Connetix Magnetic Tiles 66 Piece Rainbow Ball Run Expansion Pack. Designed to add exciting twists and turns to existing builds, this expansion set features clear fluted tubes, spiral pieces, X connectors and double bowl elements.

Children can experiment with gravity, speed and movement as they design creative marble runs filled with drops, curves and redirections. The unique tube shapes allow builders to explore new pathways and create more dynamic constructions.

Perfect for curious young engineers, this set encourages children to test ideas, refine designs and explore how structures interact with motion and balance.

Designed to grow with children as their building skills develop, this pack works beautifully alongside other Connetix magnetic tile sets to unlock even bigger marble run creations.