---
product_id: 613503664
title: "RoboRails STEM Kit, Toy of The Year Winner, Build a Robot Monorail System w/Splitters, Cross Switch, Seesaw Mechanism, Modern-Day Model Train Set, Explore Physics, Gyroscopic Forces"
brand: "thames & kosmos"
price: "357.15 DT"
currency: TND
in_stock: true
reviews_count: 8
category: "Thames & Kosmos"
url: https://www.desertcart.tn/products/613503664-roborails-stem-kit-toy-of-the-year-winner-build-robot
store_origin: TN
region: Tunisia
---

# 3 unique track connectors Motorized gyroscope tech 26+ modular track designs RoboRails STEM Kit, Toy of The Year Winner, Build a Robot Monorail System w/Splitters, Cross Switch, Seesaw Mechanism, Modern-Day Model Train Set, Explore Physics, Gyroscopic Forces

**Brand:** thames & kosmos
**Price:** 357.15 DT
**Availability:** ✅ In Stock

## Summary

> 🚄 Glide into the future of STEM play with RoboRails — where science meets thrill!

## Quick Answers

- **What is this?** RoboRails STEM Kit, Toy of The Year Winner, Build a Robot Monorail System w/Splitters, Cross Switch, Seesaw Mechanism, Modern-Day Model Train Set, Explore Physics, Gyroscopic Forces by thames & kosmos
- **How much does it cost?** 357.15 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/613503664-roborails-stem-kit-toy-of-the-year-winner-build-robot)

## Best For

- thames & kosmos enthusiasts

## Why This Product

- Trusted thames & kosmos brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Award-Winning Innovation:** Join the future of play with the 2025 Vehicle of the Year winner, blending education and entertainment seamlessly.
- • **Dynamic Route Challenges:** Add excitement with seesaws, splitters, and cross switches that transform every run into a new adventure.
- • **Endless Track Creativity:** Snap together 26+ track configurations or design your own futuristic monorail routes with ease.
- • **STEM Learning Meets Play:** Dive deep into physics concepts like angular momentum and acceleration with a vibrant 32-page illustrated manual.
- • **Balance on One Wheel, Powered by Gyroscope:** Experience cutting-edge physics with a motorized gyroscopic monowheel that defies gravity and friction.

## Overview

The Thames & Kosmos RoboRails STEM Kit is an award-winning educational robotics set that lets kids build a motorized monorail robot balancing on a single gyroscopic wheel. Featuring over 180 durable parts and 26+ track layouts with unique connectors, it combines hands-on assembly with physics lessons on rotational motion and angular momentum. Designed for ages 8-12, this kit promotes critical thinking, creativity, and STEM skills through immersive play.

## Description

Explore the future of transportation with RoboRails! This compact robot balances on a single wheel and glides along a monorail track thanks to its fast-moving internal gyroscope and monowheel. A clever design uses ball bearings as the weights of the gimbal, which is nearly frictionless as it spins. You’ll be amazed at how steady this robot is on the track! The full-color, 32-page manual guides you through a step-by-step assembly of the robot and dozens of track layouts from over 180 durable, plastic parts. Choose any of the 26 configurations in the manual or use your imagination to invent your own! Combine the snap-together track segments with the three special connectors – the seesaw, the splitter, and the cross switch – to add twists, turns, and obstacles to your routes. A series of hands-on experiments demonstrate important physics topics such as rotational motion, acceleration, and angular momentum, bringing the science of gyroscopic forces to life right before your eyes! Bonus: learn how these principles are an integral part of the development of monorails and green transportation.

Review: Love this Monorail Toy - I purchased this for my nephew who loves trains. I love the idea that he can learn a different type of system and build his own tracks. I will say the little monorail is quite loud and feels off balance; however, that’s part of his charm. It is a great STEM toy!
Review: Not the best for your kids to solo. - There was a lot of what I would call higher difficulty assembly required. I made sure I was involved in the assembly. I liked the kit I just think it requires a good amount of skill to assemble.

## Features

- Build a robot that zooms along a monorail track on one wheel thanks to a motorized gyroscope unit with a clever ball-bearing weight system that reduces friction, allowing the robot to stay balanced for longer.
- Taking classic model train sets into the future, kids can quickly and easily reconfigure the snap-together track segments into countless possibilities; assemble the 26 track designs suggested in the manual, or create your own!
- Three unique connectors (the seesaw, (2) 3-way splitters, and a cross switch) add fun twists, turns, and obstacles to your routes!
- The 32-page, full-color illustrated manual elevates this fun building set into a valuable learning tool, providing step-by-step assembly instructions as well as scientific explanations that dive into important physics concepts like rotational motion, acceleration, angular momentum, and more.
- The open-ended design promotes critical thinking and problem-solving skills as well as imagination and creativity.
- The 2025 Vehicle of the Year Award Winner

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CRJW2GT8 |
| Age Range Description | Kid |
| Battery Description | Alkaline |
| Best Sellers Rank | #170,894 in Toys & Games ( See Top 100 in Toys & Games ) #1,766 in Educational Science Kits |
| Brand Name | Thames & Kosmos |
| Customer Reviews | 4.2 4.2 out of 5 stars (66) |
| Educational Objective | Concentration, Construction Skills, Creative Skills, Critical Thinking, STEM |
| Global Trade Identification Number | 00814743018761 |
| Included Components | Motor, Plastic building pieces |
| Is Assembly Required | Yes |
| Item Dimensions | 14.8 x 3 x 11.3 inches |
| Item Type Name | Robotics STEM Kit |
| Item Weight | 1.9 Pounds |
| Manufacturer | Thames & Kosmos |
| Manufacturer Maximum Age (MONTHS) | 144 |
| Manufacturer Minimum Age (MONTHS) | 96.0 |
| Manufacturer Part Number | 620400 |
| Material Type | Plastic |
| Model Number | 620400 |
| Set Name | RoboRails |
| Size | Medium to Large |
| Theme | transportation |
| UPC | 814743018761 |
| Unit Count | 1.0 Count |

## Images

![RoboRails STEM Kit, Toy of The Year Winner, Build a Robot Monorail System w/Splitters, Cross Switch, Seesaw Mechanism, Modern-Day Model Train Set, Explore Physics, Gyroscopic Forces - Image 1](https://m.media-amazon.com/images/I/81kLYmGzFfL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Love this Monorail Toy
*by H***E on March 18, 2026*

I purchased this for my nephew who loves trains. I love the idea that he can learn a different type of system and build his own tracks. I will say the little monorail is quite loud and feels off balance; however, that’s part of his charm. It is a great STEM toy!

### ⭐⭐⭐⭐ Not the best for your kids to solo.
*by S***L on February 24, 2025*

There was a lot of what I would call higher difficulty assembly required. I made sure I was involved in the assembly. I liked the kit I just think it requires a good amount of skill to assemble.

### ⭐⭐⭐⭐⭐ Great STEM activity
*by E***C on September 27, 2025*

Easy fun to build with kids ( 5 and 7). Delivered hours of fun with the different configurations of tracks. It’s a toy my kids take out often and not just set to the side. Instructions not only serve to build, but adds educational information.

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-09-30*