Ravensburger GraviTrax Trax Expansion Set | Expand Your Marble Run | STEM Toy for Ages 8+

Extend your GraviTrax marble run with the Trax Expansion set. Designed to unlock new heights, distances, and curves, this expansion invites open-ended, imaginative play as marbles race through gravity-powered tracks.

With over 40 additional components, you can push your existing GraviTrax Starter set to new levels. The expansion adds height tiles, curves, an X-intersection tile, extra tracks, and marbles, giving you more ways to design and test your ideas.

Endless building possibilities

GraviTrax is a modular, open-ended track system that sparks experimentation. Players decide the course, test ideas, and refine routes based on how gravity and velocity interact on each layout. The non-electronic design keeps the focus on physical problem solving and hands-on exploration.

What’s included

• 6 large height tiles
• 8 small height tiles
• 7 curved tiles
• 1 X-intersection tile
• 6 tracks (1 long, 2 medium, 3 short)
• 6 marbles (3 colored, 3 silver)

STEM-friendly play

Beyond moments of launch, GraviTrax invites kids to observe trajectories, speed, and timing. The non-electronic design emphasizes hands-on problem solving, pattern testing, and collaborative play as goals and constraints evolve during play sessions.

Why families choose GraviTrax

• Compatible with all GraviTrax systems for expandable play time
• Durable construction designed for regular building and reconfiguration
• Great for creative, curious kids and adults who love to build

Real-life play scenarios

Picture siblings comparing track designs for faster routes, or friends refining accelerations by shifting height tiles and curve placements. The tactile feedback and adjustable segments invite shared problem solving and storytelling with each run.

Educational value in action

Children explore cause and effect, timing, and spatial reasoning as they adjust height, angle, and track choices. The open-ended design adapts to evolving questions, making it a repeatable activity that grows with curiosity.

Whether starting from the starter set or layering on more expansions, the Trax Expansion opens a world of track layouts, ensuring repeated, engaging building sessions without electronics.

Open-ended creativity that grows

The Trax Expansion scales with imagination. Start simple, then rise to multi-level courses with bridges and intersections, discovering new physics ideas and storytelling moments with each rearrangement.