Hi, my 2 cents: strictly speaking, a shareware .WAD will work, but not for custom .WAD's. I use the .WAD from Ultimate Doom PC, renamed as doomu.wad, and just copied to my Amiga Doom DIR. (size is 12,408,292....) According to the Docs from ADoom, best luck is with PC .WAD files, less luck with MAC or Linux .WAD's....