Dr. Dungeon, aka Robert J. Deutsch, seems to have been (or still is?) a prolific creator of classic-style RPG games. In his own words, his games are intended to "retain the classic flavor of games like Ultima 7, Fallout and Baldur's Gate." His game Madman is now available on Steam.
Games developed and/or published by Dr Dungeon
Morbius' Isthmus (1992)