Fractal Machine
That's because your version of Blender doesn't have the volume cube geometry node. Upgrade to at least Blender 3.3 to make the fractals work.
No, the Fractal Machine is built in combination with shader and geometry nodes. Installing is simple - you just need to unzip the Fractalmachine.zip into your Blender assets folder. More detailed instructions in the first tutorial video.
This happens because your fractal might contain instances, so when applying nodes or converting to mesh, always add a "realize instances" node at the end of the geometry nodes tree.
However, it's more optimal to render with instances so be sure you only realize the instances when you actually need it.
I'll make it work with future Blender versions for as long as the addon is on sale on Blender Market. Maintenance updates will be free.
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