Nav 3D – Unity

Your agents were never meant to walk. Let them fly! 🚀


NavMesh keeps AI glued to the ground. Nav3D is true volumetric navigation for Unity: A* pathfinding and ORCA collision avoidance in full 3D space — no navigation mesh, no ground plane, no waypoint hacks. While other pathfinding solutions route agents across surfaces, Nav3D gives them the whole volume of your scene.


🔗 Find out more:

🎮 target=”_blank”>Live demo | 📖 target=”_blank”> | 💬 target=”_blank”>Forum | ▶️ target=”_blank”>Video tutorials


⭐ On the Unity Asset Store since 2017 — actively developed and supported. ⭐


PERFECT FOR

Birds and flying creatures, fish and underwater life, dragons, drones, aircraft, spaceships, submarines. Aerial combat and drone sims, space games, underwater worlds, tower defense with air units, zero-g environments — anywhere “walkable surface” simply doesn’t apply.


WHAT YOU GET

✅ Real 3D pathfinding — A* over an adaptive octree that represents your entire scene volume, from vast open skies down to tight corridors.
✅ Fully multithreaded — paths are computed on worker threads; your frame rate doesn’t pay for navigation.
✅ ORCA local avoidance — crowds of agents weave past each other smoothly instead of colliding or jittering.
✅ Static and dynamic obstacles — bake level geometry into a binary file with Nav3DObstaclePreBaked for near-instant loading, or add, move and remove Nav3DObstacleRuntime obstacles in play mode while agents re-path on the fly.
✅ Per-region resolution control — spend octree detail only where the action is, keeping memory and bake times low on huge maps.
✅ Path smoothing — natural, flowing trajectories instead of blocky graph paths.


BUILT FOR PRODUCTION

✅ One line of code to move an agent — add a Nav3DAgent component, call MoveTo, done. A clean, lightweight API with full C# source code included and no external dependencies.
✅ Deep tuning when you need it — per-agent ScriptableObject configs cover speed, radius, avoidance behavior and ~30 parameters in total; agents of different sizes and characteristics coexist on the same scene.
✅ Async everywhere — long operations report progress and support cancellation.
✅ Debug-friendly — event-driven API plus editor gizmos for paths, octree and avoidance.
✅ Proven performance — Windows, macOS, Android and iOS.
✅ 7 demo scenes, video tutorials and full documentation — a working example for every major feature.


Stop faking 3D movement with waypoints and raycasts. Give your agents a real sense of space.


⚠️ Note: WebGL is not supported.

Home Page: _https://assetstore.unity.com/packages/tools/behavior-ai/nav3d-100285

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