GraviTrax Expansion Building Christmas They can also play three

They can also play three interactive games called Around the World

Grimey and skeleton minifigures bring the action to life and encourage imaginative role play

coordination

With LED lights

GraviTrax Expansion Building Christmas They can also play threeTake your marble runs to the next level with the GraviTrax Expansion Building Set. Designed to expand your existing GraviTrax system, it lets kids build bigger, more exciting track designs. Add new components to create faster runs, trickier paths, and more dynamic builds while experimenting with gravity, motion, and problem solving. Perfect for hands on STEM learning, this set encourages creativity, critical thinking, and endless construction fun.