Unity NavMesh (AI Navigation)

Give NPCs pathfinding in Unity 6.3 LTS: bake walkable surfaces and move agents around obstacles. Targets Unity 6.3 LTS (6000.3) with the AI Navigation package 2.0 (2.0.16 at last check).

Version trap (Unity 2022+/6): the old built-in Navigation window (Object/Bake tabs, "Navigation Static" flag) is gone. The package's Window → AI → Navigation only holds the Agents and Areas tabs. Baking is now component-based via the AI Navigation package (com.unity.ai.navigation): add a NavMeshSurface to your level geometry and click Bake. The runtime NavMeshAgent/NavMesh API stays in built-in UnityEngine.AI.

When to use

• Use when an agent needs to walk/chase/patrol to a target, when baking a navigable surface, adding dynamic blockers (NavMeshObstacle), or checking whether a destination is reachable.
• Use when the project has the AI Navigation package, a NavMeshSurface component, or scripts using UnityEngine.AI.NavMeshAgent.