Ever wish there was a solid, standard, but really big sandbox dungeon with a nice map that was free that you could go through and make into whatever kind of weird, personalized dungeon that fit your taste?
I wish that all day long--for those times when the PCs start wandering into Realms It Had Not Occurred To Mortal Men They'd Have Managed To Get To By This Tuesday.
Well, there's one right here. (Thanks to Ara Kooser for pointing it out the day I went around asking everybody for big pre-packaged locations to put some extra meat on my gameworld.)
It's written by Carlos de la Cruz Morales and, although it's for Mazes & Minotaurs, it's eminently malleable. You can re-skin most of the monsters for D&D without changing the stats at all (If you're smart enough to figure out that "Hits total: 6" = "Hit Points = 6" and "Damage = 3d6" means "Damage = 3d6". Change the AC to descending for old D&D, leave it as-is for later versions.).
My only problem is this 200+ page dungeon is set in ancient Greece and, although I love the Greek monsters, man was their fashion sense appalling. So I printed it out (the dungeon section is easily readable at 4 sheets per page, so you won't necessarily run out of paper) and am going through it removing sandals and togas and inserting Warhammerish terror, Gygaxian weirdness, and the occasional crossbow.
It is unbelievably excellent for this Mad Libs approach. There's a lot of monsters, a lot of treasure, a lot of standard traps ("Pit Trap, Concealment 16"), a few interchangeable mcguffins, and various factions warring all over the dungeon. There is absolutely nothing that makes you go "Oh, if I don't do it in ancient Greece this makes no sense" or "Well that whole section is a bust if I take out the tunnel in room 206."
Like I said, it's a simple, solid, very big, and very customizable piece of work. It's the Ford Mustang of dungeons.
Oh, and someone let me know that over on RPGnet they're arguing about whether my players are Actually Porn Stars. Seems like they're mostly talking about Mandy, which is weird, because she's the one who's done the fewest movies.