When exporting a creation from Blender to Unity, I wanted the process to be as simple, flexible, and powerful as possible. I wanted to be able to export objects created with Geometry Nodes without applying the modifiers, I wanted the possibility to export instances from Blender without converting them all to a mesh, and I wanted it to be fast.

My goal was to develop a method to export node groups or objects with linked mesh data from Blender without having to 'bake' or 'freeze' the result into a mesh. A BAsset file contains a list of instance names where each instance is assigned a list of transforms. In Unity, the importer searches your asset database for prefab or mesh assets with names that match the instances defined in the basset file and then instances those assets in 3d space within a prefab which you can drag/drop into your scene as a normal asset.

The BAsset tools provide you with a powerful workflow that lets you use all of Blender's tools for placing objects and then export the result to Unity with a simple click. Plus additional features, for bulk exporting FBXs from Blender, bulk exporting materials from Blender, and automatic creation of prefab copies of FBX assets in Unity, which are needed to add components to assets.

For an in-depth look at all the features, please check out the documentation:

https://danielhickox.com/basset