I do not know if this would interest you, but i am working on a game is in many ways a series of dungeon crawls. Drawing on Fantastic Voyage/Inner Space and Psychonaughts, you are a team of medical warriors who physically enter your patients in order to heal them. The main setting is intergalactic scifi. The system is Cypher System Core Rulebook. I would be happy to teach you if necessary. If that does not interest you,then I suggest looking into Dungeon Crawl Classics. Either way I wish you good luck and good gaming.