Ravensburger GraviTrax Bridges Expansion Set | STEM Marble Run for All GraviTrax Systems

Overview

Bridge the gap in your GraviTrax universe with the Bridges Expansion Set. This modular addition invites kids to design, reroute, and fine-tune marble runs, expanding on gravity, momentum, and timing in tangible ways.

What you get

Designed to pair with any GraviTrax Starter Set, the expansion adds a versatile mix of parts that invite experimentation. The box includes three adjustable-length bridges, two long thin tracks, two long slow tracks, one long track, two medium tracks, three short tracks, and clear instructions. The result is a flexible toolkit that fuels open-ended play and repeated testing to find just the right balance for every run.

• Adjust the bridge to create balance challenges across gaps and ravines
• Use the slow track to intentionally modulate marble speed and timing
• Explore new routes with the roll-out and quick-change paths to reimagine the course
• Complement and extend any GraviTrax system for deeper, longer play sessions

Why choose GraviTrax Bridges Expansion

• Electronic-free design supports hands-on, problem-solving learning and open-ended play
• Modular, expandable system encourages imagination and repeated experimentation
• Durable pieces built for frequent use by kids and curious adults alike
• Fully compatible with all GraviTrax sets, enabling scalable, customized builds

Learning through play

GraviTrax combines gravity, magnetism, and kinetics into a tactile, constructive experience. With more than 15.5 million units sold worldwide and a No.1 ranking in the U.S. marble run category, the brand emphasizes approachable, educational fun that invites ongoing exploration rather than a single fix. This Bridges Expansion helps families and classrooms extend play time and experiment with sequencing, timing, and route planning in a safe, engaging way.

Use cases and tips

Perfect for solo problem solving, collaborative challenges, or structured STEM activities. Start simple, then gradually introduce more pieces to create crowded crossings, long cascades, or suspenseful pauses as marbles roll through the expanded course.