Tegel Manor Reborn (5E)

First published in 1977, Tegel Manor is the oldest of “Haunted House” adventures in fantasy roleplaying, and probably the very first megadungeon ever published. The Manor is a sprawling edifice of 250+ rooms filled with tricks, traps, puzzles, monsters, and situations both humorous and horrific. The huge manor house has been the curse of its owners, the Rump family, for generations – no matter how many times they have tried to get rid of it, the ownership manages to come back to them.