In a search for RTG games on the Amiga I have come across this site on archive.org:
http://web.archive.org/web/199904270...ktespiele.html
I have found an older version of TomShang on DMS-LHA BBS 15 CD, but this does not appear to have RTG support. The games look like they are German only, which is probably why I never heard of them before. They are not even listed in the huge games list on Obligement. Maybe they were put on a German magazine coverdisk somewhere around 1997-99? Does anyone still have these?