Marble Genius Marble Run Booster Set - 30 Pieces Total (10 Action Pieces Included), Construction Building Blocks Toys for Ages 3 and Above, with Instruction App Access, Add-On Set, Original

Expand the fun to your marble run with our Booster Set. This set features some of our favorite and most unique action pieces including 360 degree loop, Alternating Y, Jump Piece, among others. It also includes several pieces that are not featured in any of our other sets.

9 action pieces for exciting play Kid-friendly connectors are easy to assemble Free Marble Genius App with instructions and challenges Compatible with all Marble Genius Sets (7/8" top and 1-1/16