RS
RoboSim Sandbox
Now with real-time physics v3.0

Build. Simulate.
Program Robots.

Browser-based robot simulation sandbox with a real-time physics engine, sensor emulation, and collaborative code editor. Design your robot, test it virtually, deploy it physically.

3D Simulation Viewport

240+
Robot Models
85
Sensor Types
12K
Active Builders
3.2M
Simulations Run

Simulation Toolkit

Everything you need to design, simulate, and deploy robots — all in your browser.

3D Simulator

Real-time physics with collision detection, gravity, and friction models.

Sensor Emulator

LIDAR, ultrasonic, IR, camera, IMU — all configurable in real-time.

Code Editor

Built-in editor with Python/C++ highlighting, autocomplete, and live reload.

Scenario Library

200+ pre-built test scenarios for navigation, manipulation, and more.

Featured Builds

Community-created robot projects you can fork and modify.

Autonomous Rover

Intermediate

Exploration

Warehouse AGV

Advanced

Industrial

Hexapod Walker

Beginner

Educational

Drone Swarm Unit

Expert

Research

Agri-Bot Seeder

Intermediate

Agricultural

Home Companion

Beginner

Home

Ready to build your first robot?

Jump into the simulator with zero setup. Choose a template, write your control code, and watch your robot come to life.

Launch Simulator