New special room “cursed graveyard”. Its initial generation is the same as a regular graveyard. The difference is that it generates undead monsters on open spaces in the graveyard (with messages like “A zombie claws out of the ground!”) at a much higher frequency than normal, so long as there is still a gravestone existing within the graveyard. When all gravestones in the graveyard are destroyed, the room converts to a normal graveyard and undead stop spawning.

Gravestone texts in a cursed graveyard don’t draw from the regular pool of gallows-humor messages. They instead use a separate pool of ominous, vengeful, and threatening messages.

Regular gravestone-destroying penalties do not apply if the gravestone being destroyed is in a cursed graveyard.

Priests can destroy a headstone in a cursed graveyard by #turning while standing on it.

Remove the graveyard flag from the Castle level, but make it so that undead cannot follow you upstairs past the Valley of the Dead, preventing wraith luring. (Could also apply this restriction to levelport and branchport).

Walled-off sections of graveyards with locked doors named “crypts” can generate. Inside crypts are very strong out-of-difficulty mummies. Note that this would require that very strong mummies exist in the game in the first place.

Graveyards can rarely generate visible pits (open graves) with no monster on top of them.