Just a clarification: TLGs Cult of Yex is not one huge dungeon. It is a full campaign of eight distinct modules. Some modules have one good sized dungeon, some have 2 or 3 smaller ones, including several pocket dimensions, a morphic castle, inside a huge living tree, an ice dungeon, underwater in a flooded dungeon, an undersea dungeon, a graveyard mausoleum, and a few traditional dungeons, etc... Quite a variety of different dungeon settings, and of course plenty of city, wilderness and extraplanar settings thrown in.
Parker