Dungeon Master Forum

Does anybody know of a utility/programming language/tool that may exist - out there that specialises in writing RPGs in the mould of Dungeon Master. - I recall many years ago some package that was supposed to come out on the - Amiga called Visonary (I think) which was a games programming language - specifically written with Dungeon Master type games in mind. Does this - exist or anything like it? (By the way I already know of DMute, I was - thinking of something which gives you more control ie: Making your own - "Monsters, animations etc"