About the World's Largest Dungeon

The World’s Largest Dungeon is a Dungeons & Dragons adventure set entirely in an enormous dungeon. It is over 800 pages long and was produced by Alderac Entertainment Group in 2004. It also includes 16 full-color poster maps, making its single tome one of the largest campaign settings in one product.

The players can’t leave the dungeon the way they entered because the entrance uses a one-way wall of force effect. This means that all supplies must be taken into the dungeon with them. The campaign is designed to take four to six characters from first level to 20th or above over the course of two real-time years and at least a year of game time. The dungeon contains examples of every type of monster in the System Reference Document as well as a few new ones.

I will be attempting to adapt this mega-dungeon as part of an original D&D campaign that I am running. Each area will have its own exit but you can only enter it from the original entrance. So each time you exit you will have to work your way back through to where you exited. I do not plan that the area will re-populate, once an area is cleared it will stay clear, however, if you do not clear an area before you leave it, then I can’t promise what may happen in that area while you are gone.

Here’s an overview map of the entire mega-dungeon: