This Geometry Nodes setup generates a fractal tree structure by recursively instancing geometry. It begins with a base tetrahedron, extruding its faces, removing the tops, and instancing the base shape onto the extruded areas.

While the setup allows for merging by distance to achieve smooth shading transitions, this requires realizing the instances, which can impact performance. The base geometry can be modified to other shapes, provided all sides match the base for seamless attachment. The file is provided primarily as an educational reference for exploring recursive instancing and alignment techniques in Blender.