1. Product Overview
The Marble Genius Glow in The Dark Marbles set includes 50 pieces designed to enhance marble run play. This set features three types of marbles:
- LED-activated plastic marbles: These marbles glow when activated by an LED light source.
- LED-activated glass marbles: Similar to the plastic marbles, these glass marbles also glow when exposed to an LED light.
- Motion-activated flashing marbles: These marbles contain internal LEDs that flash brightly when they are in motion.
These marbles are compatible with all Marble Genius accessories and sets, offering expanded possibilities for creative marble run designs.

Image 1.1: The Marble Genius Glow in The Dark Marbles set, showing the product packaging and a variety of marbles.

Image 1.2: A visual representation of the three distinct types of glow marbles included in the set.
2. Setup and Activation
2.1 Activating Glow Marbles
To activate the glow feature of the LED-activated plastic and glass marbles, expose them to a light source. For optimal glow, use the included UV light or a similar LED light source to 'charge' the marbles. The marbles will absorb the light and then emit a glow in low-light conditions.
2.2 Motion-Activated Flashing Marbles
The motion-activated flashing marbles are designed to light up automatically when they are moved. No external charging is required for their flashing function. These marbles contain internal batteries (1 CR2 battery included per marble) that power their LED lights.
Video 2.1: Demonstration of glow in the dark marbles activating and glowing in low light conditions.
Video 2.2: A close-up view of bright LED marbles in action, showcasing their illumination.
3. Operating Instructions
These marbles are designed for use with Marble Genius marble run sets. Place the marbles at the starting point of your marble run and observe as they travel through the tracks, towers, and other components. The motion-activated marbles will flash as they move, and the LED-activated marbles will glow if they have been sufficiently charged and are in a low-light environment.

Image 3.1: A child interacting with a Marble Genius marble run, demonstrating typical play.
Video 3.1: An overview of a Marble Genius Marble Run in operation, showcasing the marbles moving through the tracks.
4. Maintenance
4.1 Cleaning
To clean the marbles, wipe them with a soft, damp cloth. Avoid using harsh chemicals or abrasive materials, as these may damage the marble surface or the internal LED components.
4.2 Battery Replacement (Motion-Activated Marbles)
The motion-activated flashing marbles are powered by CR2 batteries. If a motion-activated marble stops flashing, the battery may need replacement. Due to the sealed design for durability, battery replacement is not typically user-serviceable and may require specialized tools or expertise. Attempting to open the marbles may damage them.
5. Troubleshooting
5.1 LED-Activated Marbles Not Glowing
- Ensure the marbles have been sufficiently charged by exposing them to a bright light source, such as the included UV light, for an adequate period.
- Confirm that the play environment is dark enough for the glow effect to be visible.
5.2 Motion-Activated Marbles Not Flashing
- Verify that the marbles are experiencing sufficient motion to trigger the internal sensor.
- If the marble still does not flash, the internal battery may be depleted or the LED component may be faulty. As battery replacement is not user-serviceable, contact customer support if issues persist.
Video 5.1: A user demonstrating light-up marbles, noting that some may not function as expected.
Video 5.2: A brief clip showing light-up marbles, with a user expressing dissatisfaction regarding their functionality.
6. Specifications
| Product Name | Glow in The Dark Marbles for Marble Run |
| Brand | Marble Genius |
| Model Number | GLOW_MARBLES |
| ASIN | B08D3BCB48 |
| Quantity | 50 Pieces |
| Package Dimensions | 5.04 x 3.82 x 2.05 inches |
| Item Weight | 0.352 ounces |
| Recommended Age | 4 years and up |
| Batteries (Motion-Activated) | 1 CR2 battery required (included) |