Bloody Countess Dungeon

From publisher blurb: Bloody Countess Dungeon is a dungeon written entirely in one page. It can be played with any generic RPG system and you are going to need a player to be the Storyteller (Game Master a.k.a GM) and 3 to 5 players to take the roles of the Playable Characters (PC). Context: Set by the end of the XV century, a vampire countess keeps her preys alive at her personal dungeon, so she can always have some fresh blood for herself. With the recurring disappearances of some folks in a village near her county, a group of heroes decides to venture into the dungeon determined to save her prisoners