Unity Prefab Collider Generator Unity PCG Generates a BoxCollider Encapsulating Every Child Mesh, Collider or Transform Instructions Add the Prefab Collider Generator Script onto any gameobject Change the target GameObject if needed Select the generation mode : From Meshes / Colliders / Transforms, depending on you needs Click on Generate Collider Additional Features Click Clear Duplicate Colliders to remove unnecessary box colliders from the target GameObject Click "Assign Self" to force self assigning (The script normally does it automatically upon enabling)