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Some day the piecing together of dissociated knowledge will open up such terrifying vistas of reality...

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The concept behind the MoM1-Icon Mythos Insanity.png Mythos cards were later adapted into the Insane Condition card in Mansions of Madness Second Edition. In particular, the "Suspicious" insanity almost directly quotes the "Spread Suspicion" mythos.

Mansions of Madness[]

Mythos Expansion Subset Requirement Cost Effect
A Reflection Core Set MoM1-Icon Mythos Upstairs.png Bedroom, Nursery, or Bathroom 1 You glance in the mirror, but alas, there is no one looking back at you.
Take 1 horror.
Loose Floorboard Core Set MoM1-Icon Mythos Upstairs.png Bedroom, Hallway, Foyer, or Attic 0 You run frantically down the hall away from some unseen evil, only to lose your footing.
Test Dexterity.
Pass: Nothing happens.
Fail: You are stunned.
Twisting Before You Core Set MoM1-Icon Mythos Upstairs.png Foyer, Hallway, or Cave 1 The hallway in front of you appears to stretch on forever. It is impossibly long. Impossible!
Take 1 horror or allow the keeper to draw 2 Trauma cards.
Vertigo Core Set MoM1-Icon Mythos Upstairs.png Foyer, Stairs, or space with a Ladder 0 The stairs bend in front of you and you lose your balance.
Test Willpower.
Pass: Nothing happens.
Fail: Take 1 damage.
Where is the Door? Core Set MoM1-Icon Mythos Upstairs.png 1 Where there used to be a door, the wall seamlessly continues. Where did it go?
Test Intellect.
Pass: Nothing happens.
Fail: You may not move through any doors this turn.
Wrong Turn Forbidden Alchemy MoM1-Icon Mythos Upstairs.png A lone investigator in a Hallway. 1 Weren't you here before?
Test Intellect.
Pass: Nothing happens.
Fail: The keeper may move you to any other space in a Hallway that contains no Exploration, Lock or Obstacle cards.
Confinement Core Set MoM1-Icon Mythos Downstairs.png Any room that has only 1 space. 0 The walls seem to close in around you.
Test Willpower.
Pass: Nothing happens.
Fail: Take 1 horror.
Darkness Below Core Set MoM1-Icon Mythos Downstairs.png Stairs or space with a Ladder 1 You swear you hear breathing. The lights below suddenly go out.
The keeper may place darkness in an adjacent room. Then test Willpower.
Pass: Nothing happens.
Fail: You may not move anymore this turn.
Living Darkness Core Set MoM1-Icon Mythos Downstairs.png Cave, Chasm, Basement or room in darkness 1 The darkness ahead of you becomes alive. The living black smoke coagulates into the form of a human. You turn and run.
Take 1 horror. The keeper may then move you up to 2 spaces.
Unholy Presence Core Set MoM1-Icon Mythos Downstairs.png Crypt, Ceremony Room, Graveyard, Chapel, or a space with an altar 1 The room stinks of blood and unholy ceremonies. You sense the lingering presence of some ancient evil. A figure rises from the shadows...
Place 1 cultist in the room.
Who is There? Core Set MoM1-Icon Mythos Downstairs.png 1 The hairs on the back of your neck stand on end. You spin around as a harsh voice calls your name, but there is no one there.
Take 1 horror.
Sudden Inferno Forbidden Alchemy MoM1-Icon Mythos Downstairs.png Cave, Chasm, or a space with an altar 2 A spray of steam comes from the shadows, followed by an unnatural burst of flame.
Place a fire marker in your room, then test Dexterity.
Pass: You may move 1 space.
Fail: Nothing happens.
Ancient Knowledge Core Set MoM1-Icon Mythos Mansion.png Study, Library, Laboratory, or Chapel 1 An unseen force beckons you to pick up a book of ancient wisdom. On its pages are no words, only a blackness that makes you realize the insignificance of your existence.
Take 1 horror.
Closing In Core Set MoM1-Icon Mythos Mansion.png Closet, Storage, Freezer, or Passage 1 The walls begin to close in around you.
Test Willpower −1.
Pass: Nothing happens.
Fail: Take 2 horror.
Lack of Concentration Core Set MoM1-Icon Mythos Mansion.png An unsolved puzzle within 1 space. 0 As you puzzle over the problem, a snake silently slithers over your hand.
Test Intellect.
Pass: Nothing happens.
Fail: Take 1 horror. Then reset the puzzle.
What is for Dinner? Core Set MoM1-Icon Mythos Mansion.png Dining Room or Kitchen 0 Strewn across the table is filthy kitchen ware and rotting food. Some unknown urge makes you take a bite.
Test Willpower +1.
Pass: Nothing happens.
Fail: Take 1 damage and 1 horror.
What is Inside? Core Set MoM1-Icon Mythos Mansion.png Laboratory, Freezer, Operating Room, or Kitchen 0 You open the closet doors looking for clues. Instead you find that the cabinets are filled with bloody body parts!
Test Willpower +1.
Pass: Nothing happens.
Fail: Take 2 horror.
Dead Yet? Forbidden Alchemy MoM1-Icon Mythos Mansion.png Morgue, Holding Cell, Operating Room, or Graveyard 2 A sudden rustling startles you.
Test Luck.
Pass: Place a corpse marker in your space.
Fail: Place a zombie in your space.
Bottomless Sinkhole Core Set MoM1-Icon Mythos Grounds.png Garden, Lawn, or Yard 1 As you step on the grass, the ground beneath your feet falls away. You twist your ankle as you dive away from a hole that, from your best estimation, leads to the center of the earth.
You are stunned and take 1 damage.
Caught in the Open Core Set MoM1-Icon Mythos Grounds.png Any space that has 3 or more adjacent spaces (not through doors). 0 Somewhere nearby, a wolf howls. You spin around looking for a hiding space, but find none.
Test Willpower.
Pass: Nothing happens.
Fail: Take 1 horror.
From Below Core Set MoM1-Icon Mythos Grounds.png Garden, Graveyard, Basement, Cave, or Crypt 2 A rotted hand bursts out of the ground and grabs your ankle.
Take 1 horror.
Then test Luck.
Pass: Nothing happens.
Fail: Place 1 zombie in your space.
Stalked by Shadows Core Set MoM1-Icon Mythos Grounds.png 1 A shadowy creature stalks towards you. In a panic, you run until a solid oak door is between you and the predator.
The keeper moves you any number of spaces until you move through the nearest door. In the case of a tie for the nearest door, the keeper chooses which.
Strange Skies Core Set MoM1-Icon Mythos Grounds.png Yard, Patio, Garden, or Front Path 0 The sky above you becomes blood red. You are bathed in the same crimson light, thought neither the sun nor the moon is visible.
The keeper may either gain 3 threat or immediately perform 1 keeper action.
Night Hunters Forbidden Alchemy MoM1-Icon Mythos Grounds.png Rooftop, Yard, Patio, or Garden 2 You hear the hideous sound of leathery wings above.
Test Luck.
Pass: Take 1 horror.
Fail: The keeper may place a mi-go or a byakhee in your space.
Decaying Weapon Core Set MoM1-Icon Mythos Weapon.png 2 You realize that your weapon is crumbling away in front of your very eyes. It could fall apart at any moment.
The keeper chooses one of your "Melee Weapon"(?) cards. The next time this weapon is used to attack, it is then discarded.
Gun Jam Core Set MoM1-Icon Mythos Weapon.png 1 You aim at your enemy, brace yourself, and pull the trigger. To your dismay, there is only a metallic click without the expected explosion.
You may not use any "Ranged Weapon"(?) cards during this turn.
Low Ammo Core Set MoM1-Icon Mythos Weapon.png 2 You reach in your pocket, and realize that you only have 1 bullet left.
The keeper chooses one of your "Ranged Weapons."(?) The next time this weapon is used to attack, it is then discarded.
Low Grade Manufacturing Core Set MoM1-Icon Mythos Weapon.png 2 The cheap item snaps as you try to lift it. Unfortunately, it is now completely useless.
The keeper chooses one of your equipment cards.
Test Dexterity.
Pass: Nothing happens.
Fail: Discard the chosen card.
Sudden Heat Core Set MoM1-Icon Mythos Weapon.png 1 Your hand starts to burn, and you instinctively drop your weapon. You nurse your hand, which now has a melted impression of the weapon on its palm.
The keeper chooses one of your "Weapon"(?) cards. You drop the weapon in your room.
Improperly Loaded Forbidden Alchemy MoM1-Icon Mythos Weapon.png Play on an investigator's "Ranged Weapon"(?) card. 0 In your haste, you think you might have loaded this weapon incorrectly.
You may not use this weapon. You may spend 1 Movement Step on your turn to discard this Mythos card.
Baffling Voices Core Set MoM1-Icon Mythos Haunting.png 1 Whispered voices drift down the halls. Their chanting becomes louder and louder. You cover your ears and start banging your head against the wall to get the voices out.
Take 1 horror and 1 damage. If affected by a darkness token, take 1 additional horror.
Eyes in the Dark Core Set MoM1-Icon Mythos Haunting.png Basement or any room in darkness. 1 Through the dark, you see a pair of red eyes slowly moving towards you.
Take 1 horror. The keeper may then move you up to 2 spaces.
Locked Behind Core Set MoM1-Icon Mythos Haunting.png 1 You jump as every door in the room slams shut. You frantically try to open one, but it is jammed.
Test Strength.
Pass: Nothing happens.
Fail: You may not move through any doors this turn.
Plunged into Darkness Core Set MoM1-Icon Mythos Haunting.png 1 The room gets very cold as the lights become blindingly bright. Your ears pop as every light in the room burns out.
Place a darkness token in the investigator's room.
Poltergeist Core Set MoM1-Icon Mythos Haunting.png Hallway, Foyer, Bedroom, or Gallery 0 A painting flies off the wall towards your head.
Test Willpower +1 and then test Dexterity +1.
Pass Willpower: Nothing happens.
Fail Willpower: Take 1 horror.
Pass Dexterity: Nothing happens.
Fail Dexterity: Take 1 damage.
Message in Blood Forbidden Alchemy MoM1-Icon Mythos Haunting.png 3 Your mind goes blank at the sight of the bloody letters. The horrid words demand that you leave.
Test Willpower.
Pass: Take 1 horror and the keeper moves you 1 space.
Fail: Take 2 horror and the keeper moves you to the Start space.
Compelled By Madness Core Set MoM1-Icon Mythos Insanity.png The investigator has 0 sanity. 0 It feels good to release control of your body and mind.
The keeper performs the remainder of your turn as if he was playing as an investigator. He may even attempt to move into rooms that have Lock cards.
Loss of Will Core Set MoM1-Icon Mythos Insanity.png The keeper plays this card facedown on you. You may not share the information on this card with other players. 0 You win if the keeper wins (instead of if the investigators win).
If you are killed, you are eliminated and cannot win the game.
Selfish Motives Core Set MoM1-Icon Mythos Insanity.png The keeper plays this card facedown on you. You may not share the information on this card with other players. 0 You don't trust your companions, and you sure as hell aren't going to sacrifice yourself for them.
If you are killed, you are eliminated from the game.
Spread Suspicion Core Set MoM1-Icon Mythos Insanity.png The keeper plays this card facedown on you. You may not share the information on this card with other players. 0 Your friend glances at you, distrust in his eyes.
No effect. Discard this card if you are killed.
Spread Suspicion Core Set MoM1-Icon Mythos Insanity.png The keeper plays this card facedown on you. You may not share the information on this card with other players. 0 Your friend glances at you, distrust in his eyes.
No effect. Discard this card if you are killed.
Left to My Own Devices Forbidden Alchemy MoM1-Icon Mythos Insanity.png A lone investigator. 0 I've been here too long. I've started behaving oddly and forgetting what I've done. My judgement has become...unreliable.
For each horror the investigator has, the keeper gains 1 threat.
Alluring Potions Forbidden Alchemy MoM1-Icon Mythos Alchemy.png Laboratory, Storage, Office, or Morgue 2 A dozen vials of various colored liquids seem to call out to you. Without realizing it, you reach out and grab one, bringing it to your lips...
Test Willpower.
Pass: Nothing happens.
Fail: Draw 1 Side Effect card.
Bargaining from Beyond Forbidden Alchemy MoM1-Icon Mythos Alchemy.png 0 You hear voices in your head, promising you knowledge and power from afar. You don't have to listen, but part of you wants to...
You may gain up to 3 skill points. For every skill point you choose to gain, the keeper gains 2 threat.
Death Rattle Forbidden Alchemy MoM1-Icon Mythos Alchemy.png Graveyard, Morgue, Quarantine Room, a space with a corpse marker 4 It turned to me! The body turned to me, looked me in the eyes, and said my name!"
Discard 2 skill points.
Insidious Reasoning Forbidden Alchemy MoM1-Icon Mythos Alchemy.png A humanoid monster in a space with an investigator. 2 "What you hold could end the world! Give it to me!"
Test Intellect.
Pass: Nothing happens.
Fail: The keeper chooses one of your Key item cards. Drop that card in your room.
Mispronunciation Forbidden Alchemy MoM1-Icon Mythos Alchemy.png Play before an investigator makes a test when he casts a spell. 2 Your tongue gets twisted around the foreign words...
Any attribute test the investigator makes while casting this spell automatically fails.
Power Lust Forbidden Alchemy MoM1-Icon Mythos Alchemy.png Library, Laboratory, Office, Chapel, or a space with an altar 2 A dusty tome calls to you.
Test Willpower −1.
Pass: Nothing happens.
Fail: Take 1 horror, then you may let the keeper gain 3 threat to draw a Spell card of your choice.
Disoriented Call of the Wild MoM1-Icon Mythos Outdoors.png An outdoor space 1 "The trees should be over there. Trees don't just get up and move."
The keeper decides the rest of your movement this turn (excluding Actions).
From the Skies Call of the Wild MoM1-Icon Mythos Outdoors.png An outdoor space 2 Its nightmarish form swoops down, ready to pluck you from the Earth and carry you off to worlds unimaginable.
The keeper places a Nightgaunt in your space.
In Plain Sight Call of the Wild MoM1-Icon Mythos Outdoors.png An outdoor space 1 Stand and fight or run away. There are no other choices now.
The keeper chooses a monster within 2 range and moves it up to 2 spaces.
Mudslick Earth Call of the Wild MoM1-Icon Mythos Outdoors.png An outdoor space 0 Your feet fly out from under you and skid out of control across the ground.
You are stunned.
Nowhere to Hide Call of the Wild MoM1-Icon Mythos Outdoors.png 1 It sees you.
You automatically roll a 10 for the next evade check you make this turn.
Skies Above Call of the Wild MoM1-Icon Mythos Outdoors.png An outdoor space 1 It can't just be your imagination. There are faces in the clouds glaring at you.
Take 1 horror.
A Piece of Which Puzzle Call of the Wild MoM1-Icon Mythos Ritual.png Ritual Site or the investigator just completed a puzzle 0 You are beginning to understand that you are just a pawn in a larger game.
The keeper immediately attempts the ritual puzzle with 2 puzzle actions.
Clumsiness Call of the Wild MoM1-Icon Mythos Ritual.png A space with a monster 0 The panic takes over and you lose all coordination.
Test Willpower.
Pass: Nothing happens.
Fail: Drop your Starting Item cards and 1 random Exploration card.
Devilry in the Air Call of the Wild MoM1-Icon Mythos Ritual.png You are attacking a monster at the Ritual Site. 1 "It's impossible...nothing should be able to survive a wound like that.
The skill check for this attack automatically fails. The keeper may use this card after you rolled the die.
Interrupted Ritual Call of the Wild MoM1-Icon Mythos Ritual.png Ritual Site or a space containing an altar 1 Infuriated by your intrusion, the cult leader spits a curse at you.
The keeper places 1 Cult Leader in the room.
Maddening Curiosity Call of the Wild MoM1-Icon Mythos Ritual.png Ritual Site or a space containing an altar 1 You feel feverish as the arcane images start to make sense.
Test Willpower −1.
Pass: Nothing happens.
Fail: The keeper may attempt the ritual puzzle. He receives a number of puzzle actions equal to your intellect.
Tackled to the Ground Call of the Wild MoM1-Icon Mythos Ritual.png A space with a humanoid monster 1 It tries to trap you in its arms and overpower you with its weight.
Test Dexterity −1.
Pass: Nothing happens.
Fail: Your turn immediately ends.
Answered Prayer Call of the Wild MoM1-Icon Mythos Black Goat.png 0 "The Black Goat...it wants me to submit...so much power could be mine."
The keeper kills a monster in your space. He then places a Goat Spawn in your space.
Blessing of Shub-Niggurath Call of the Wild MoM1-Icon Mythos Black Goat.png The investigator just failed an attribute test. 1 "There is a beast within me. I can feel it trying to break free."
You are cursed and take 1 horror.
Countless Worshippers Call of the Wild MoM1-Icon Mythos Black Goat.png A space with a feature marker 1 The thing may be human in form but it stares at you with the eyes of a feral beast.
The keeper places a Child of the Goat in your space.
Living Trees Call of the Wild MoM1-Icon Mythos Black Goat.png Forest, Woods, Orchard, Old Oak or Hilltop 1 With the strength of a giant and the speed of a cobra, the tree lashes out.
The keeper places a Dark Young in your space. He immediately performs an attack with it and then kills the monster.
Lord of the Woods Call of the Wild MoM1-Icon Mythos Black Goat.png An outdoor space 0 You sense that something impossibly old dwells out here and it wants you to go away.
The keeper may immediately perform 1 keeper action. He may not move any monsters with this action.
Terrifying Visage Call of the Wild MoM1-Icon Mythos Black Goat.png The investigator just failed a horror check. 0 "I never imagined that such palpable malice was possible. Its expression was so cruel and diabolic.
You take 1 additional horror.
An Alliance of Dark Powers Call of the Wild MoM1-Icon Mythos Curse.png 2 For all of your talents and experiences, you cannot hope to overcome the forces that oppose you.
All of your attributes are reduced to 1 until the end of your turn and cannot be further modified.
Reduce the threat cost of this card by 1 if you are cursed.
Betrayed Faith Call of the Wild MoM1-Icon Mythos Curse.png The investigator just rolled a 1. 1 You see now this was your destiny all along. You were fated to show that humanity will always fail in struggles against the darkness.
Reroll the die.
You are then cursed.
Bone Deep Terror Call of the Wild MoM1-Icon Mythos Curse.png 1 Your muscles lock, unresponsive to your desperate need to take action.
You automatically roll a 10 for the next horror check you make this turn. Reduce the threat cost of this card by 1 if you are cursed.
Dark Blessing Call of the Wild MoM1-Icon Mythos Curse.png The investigator is in a room containing a monster. 0 You hear loud ringing and your vision blurs. A trickle of blood escapes from your ears.
The keeper discards 1 stun token from a monster in your room and gives you a curse token.
Growing Power Call of the Wild MoM1-Icon Mythos Curse.png The investigator just rolled a 10. 0 Your body shakes from the adrenaline surging through your veins. Your ferocity seems to feed the dark forces that surround you.
The keeper gains 2 threat and removes all stun tokens from monsters.
Sins of Man Call of the Wild MoM1-Icon Mythos Curse.png The investigator just killed a humanoid monster. 0 "What have I become? When did I grow so vicious?"
You are cursed and take 1 horror.
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