I had a great request to provide the entire G3D SOD archive in a single zip file for easy downloading, so here ya go!

This was possible in the past in a roundabout way.  Since the screen saver automatically downloads these files, you could set the number of frames to draw for each system to a very small value, and let the screen saver run to quickly pull the collection down.  On my computer (XP), the screen saver puts these files at ‘C:\Documents and Settings\roice\Application Data\Gravitation 3D\’.  Your mileage may vary.