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https://en.wikipedia.org/wiki/Mansions_of_Madness
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Mansions of Madness is a cooperative board game of investigation and horror inspired by the writings of H.P. Lovecraft. Wherein players explore a location to unravel a mystery.

Mansions of Madness requires two to five players. One player takes the role of the keeper (first edition only), who is responsible for the monsters and happenings of the game; the other players take on the roles of investigators, who solve a mystery. At the beginning of the game, the players pick a storyline and set up the map accordingly. The keeper consults the rule book to make decisions about the story and to place clues and traps across the board. After setting up, the players begin at the designated starting point and if there is a main character, that player with the main character role goes first. If not, the youngest player goes first. Then the other explorers take turns exploring. Each investigator may move two spaces and carry out one action. Each investigator has a health and sanity value that is depleted when the character is wounded or scared. Each time an investigator suffers damage, the keeper may play trauma cards that inflict further penalties. For instance, an investigator might receive damage of a broken leg and be unable to move as quickly as before. or the investigator could develop nyctophobia (fear of the dark) after having an encounter with an eldritch horror. During the investigator's turn, the keeper may play mythos cards to attempt to injure the character physically or mentally, degrade or destroy their items, or otherwise set them back.

After the investigators complete their turns, the keeper gets to react. The keeper accumulates threat points equivalent to the number of investigators each turn. Threat points are a resource required to use most of the keeper's ability cards.

The keeper knows the objective from the beginning while the goal is hidden from the investigators until near the end of the game.
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