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AirGen is GRID’s simulator on Unreal Engine. It targets robots that operate outdoors and over distance — drones, ground vehicles, and legged platforms — in large photorealistic environments with controllable weather, time of day, and geographic anchoring. It runs alongside Isaac rather than instead of it. Pick AirGen when the scene is an outdoor site and the question is perception, navigation, or flight. Pick Isaac when the question is contact-rich manipulation or large-scale parallel RL training.

Key Features

  • Unreal Engine 5.7: Photorealistic rendering for perception workloads where image fidelity is the point.
  • Aerial, ground, and legged robots: 26 vehicles across multirotors, fixed-wing, wheeled and tracked platforms, and quadrupeds — see Robots.
  • Large outdoor environments: Substations, oil rigs, forests, warehouses, and planetary surfaces — see Scenes.
  • Geographically anchored: Anchor the world origin to real latitude and longitude so GPS output matches a real site.
  • Controllable conditions: Weather, wind, and a celestial clock that drives sun position from a wall-clock datetime.
  • One robot interface: AirGen robots implement the same Robot interface as physical machines, so getImage() and moveByVelocity() mean the same thing in simulation and on hardware.

Start a session

Pick airgen, then a scene and a robot. The CLI provisions a GPU-backed session in the cloud and opens a VS Code workspace with a notebook whose first cell already holds your robot:

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