Megadungeons are (often large) dungeon complexes which are the focus of at least part of a campaign.

They generally contain entire ecosystems, as well as a range of levels which have various strengths of monsters. They may have a plot take place in them, but this is not required for a dungeon to be a megadungeon.

Often, a campaign will focus around a megadungeon and the Player Characters will repeatedly enter it to find treasure and kill monsters.

Questions which are covered by this tag:

1) Questions about megadungeon design

2) Questions about megadungeon contents

3) Questions about megadungeon purposes

4) Questions about specific (published, or else available publicly) megadungeons (e.g. The Ruins of Undermountain)

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