Ravensburger GraviTrax Starter Set - Expandable marble run for kids, interactive maze, educational toy and construction game for ages 8 and up.

"GraviTrax is an interactive marble run system for boys and girls aged 8 and up: With GraviTrax, children not only build simple marble runs, but create entire marble run worlds." "The GraviTrax Starter Set includes everything you need to start building right away and is compatible with all GraviTrax sets (including GraviTrax PRO) - the perfect entry into the world of interactive marble runs." "The included building plans make it easy to get started, then there are no limits to creativity: With various expansions, children can expand their marble runs and redesign them over and over again - long-lasting fun guaranteed." "Building and construction toy for creative minds: With GraviTrax, children can engage in free building, plan track layouts, experiment and realize - making GraviTrax a great pastime and ideal activity for children." "Gift for boys and girls aged 8 and up: GraviTrax appeals to both beginners and advanced users or adult builders, making it a perfect birthday gift for children, Christmas gift, or Easter gift"