Here is an Advanced Heroquest "Generating the Dungeon" online application. It generates rooms, doors, corridors, monsters, treasures, hazards and so on.
There are different flavours of dungeon, here I have the "Dungeons & Dragons: Castle Ravenloft Board Game (2010)" version in the picture:
So you can have a Skaven dungeon, Undead, Chaos dungeon. Although you are stuck with what is on the menu. (Sorry, we stopped serving breakfast. We' re on the lunch menu).
