This is just a short post to throw something out in hopes that some reader or other will have information.
I stumbled upon some unusual Eamoniana (I'm coining a term here) today while going through WorldCat: the "Creative Adventure Disk," Apple II software published in 1986 by an Australian company called Select Software. It is described as:
Create your own dungeons and dragons adventure game. Compatible with Eamon series. Suitable as an educational aid.
Select Software, it appears, distributed Eamon proper before releasing this, so this is presumably not Eamon. Moreover, the system spans four disks, so it's clearly robust.
The reference can be found at WorldCat with OCLC number 225973575. No libraries seem to have a copy. If you've encountered this software, I'd love to learn more about it.