The Random Map editors are a quick, easy way to make maps. They generate the terrain and exit locations for a map of the selected types, and can be easily edited from there. There are three types of random maps:
Using the Generators
The Random Map Generators give you control over what the random map will look like.
The Random Dungeon Generator
This is the random dungeon generator. It allows you to choose what the walls will be in the dungeon, what the terrain in the area that is not rooms or hallways will be, and what the terrain in the rooms and halls will be. It also allows you to set the size of the dungeon, the minimum and mazimum dimensions of the rooms, and what most of the things blocking the way into rooms will be. It also allows you to set which special room will appear in the map, such as a shop or monster lair.
The Random Maze Generator
The Random Maze Generator allows you slightly less control over your random map than the Random Dungeon editor. It is best left at the default values, except for the walls and terrain. It allows you to set the terrain and walls, how difficult the maze will be, what size the maze will be, and how twisty the maze will be.
The Random Cavern Generator
The Random Cavern Generator gives you control over what the walls in the cave will be, what the terrain in the cave will be, the size of the caverns, the density (how much of the area will be cave floor instead of cave wall), and the minimum number of rooms in the caverns.