This MediaFire folder has all the add-ons in 3 zip files Dr Lunatic Add-Ons. Each zip file contains installers for add-ons. There is probably a limit of 64 custom worlds. I don't know if this includes the 5 main worlds. The contents of all three zip files are compatible with this version of Dr. Lunatic. The reason for the different zip files is that before the most recent update to the game there were 2 expansion packs for it. There was first the Expando-Pak then there was the Fun Pack. Because this version of Dr. Lunatic comes with both packs the separation of these world installers into 3 zip files is purely for historical purposes.