GraviTrax is a modular marble run system designed for ages 8 and up, offering flexibility and expandability for creative construction. The system allows users to build custom marble track layouts, with compatibility across all three product lines: GraviTrax, GraviTrax PRO, and GraviTrax POWER. Components from each line can be mixed and matched for varied configurations. The set encourages open-ended play and problem-solving through physics-based track design.