150-Piece Marble Run Set – Glow-in-the-Dark STEM Maze, Ages 3+

More pieces, bigger builds — 150 parts to engineer towering tracks and watch marbles race to the bottom.

Key Features

• 150 pieces for large, elaborate layouts
• 10 glow-in-the-dark marbles plus 40 glass marbles
• Teaches engineering, gravity and problem-solving
• Easy-connect blocks for solo or group building
• Hours of rebuildable, screen-free play