Cthulhu: Death May Die

How Cthulhu: Death May Die works

At setup, choose one Episode and one Elder One and combine their components.

The Episode determines the map, scenario monsters, Discovery cards, special actions and the ritual you need to disrupt. The Elder One adds its own Mythos cards, minions, boss figure and four-stage progression.

This modular structure is the core replay mechanism: the same Episode can play differently when paired with another Elder One.

The group wins by disrupting the ritual and ultimately defeating every required stage of the Elder One.

What is in the original core game?

The original core rulebook lists:

• 6 Episode boxes
• 2 Elder Ones: Cthulhu and Hastur
• 10 investigators
• 12 Insanity cards
• 17 double-sided map tiles
• Discovery and Mythos decks
• Cultists and multiple monster types
• Standard and bonus dice

The six-Episode/two-Elder-One structure creates multiple combinations before any expansion content is added.

The four parts of an investigator turn

1. Take 3 actions.
2. Draw and resolve a Mythos card.
3. Investigate or Fight.
4. Resolve End of Turn.

You may repeat the same standard action more than once unless another rule prevents it.

This structure is intentionally aggressive: every investigator turn advances the scenario’s threat systems, so taking too many low-value turns gives the Mythos more opportunities to overwhelm the team.

The four universal actions

Run

Move up to three spaces. Enemies in your starting space follow you when you leave, which can be used to reposition threats but also makes escape dangerous.

Attack

Target an enemy in your space and make a roll. Each success normally causes one wound.

Rest

Only available in a Safe space with no enemies. Heal up to three total spaces divided between wounds and stress. Rest cannot restore sanity.

Trade

Investigators sharing a space may exchange Items and Companions. Conditions cannot normally be traded.

Each Episode also adds two unique actions, usually connected to surviving the scenario or disrupting its ritual.

Why enemies following you matters

If you leave a space containing enemies during a Run action, all enemies in that space normally follow to the new space.

This rule turns movement into a tactical tool. A durable investigator can drag enemies away from a teammate who needs a Safe space to Rest or Investigate.

But it can also create a disastrous pile of enemies if the moving investigator runs toward the ritual objective without considering what is following them.

How dice checks work

Investigators normally begin a roll with three standard black dice, adding green bonus dice from skills, sanity progression or other effects.

Dice can show:

• Successes — wounds or progress toward checks.
• Elder Signs — used by certain skills/cards.
• Tentacles — normally cost sanity.
• Blanks

Bonus dice do not contain the tentacle symbol, making later skill progression stronger without proportionally increasing madness risk.

What does Stress do?

Stress is a push-your-luck reroll resource.

After a roll, an investigator may take 1 stress to reroll one die. This can be repeated while Stress capacity remains.

Importantly, investigators also roll enemy attacks against themselves, so Stress can be spent to reroll an enemy’s successful attack dice.

Unlike sanity, Stress can be restored by Resting.

How sanity, Insanity and skill upgrades work

Every investigator has a sanity track and begins with one face-up Insanity card.

When sanity loss reaches an Insanity Threshold:

1. Stop the sanity marker at that threshold.
2. Resolve the investigator’s Insanity effect.
3. Upgrade one skill by one level.
4. Gain any permanent bonus die shown at that threshold.

This is the game’s signature progression mechanism. Madness makes you stronger, but reaching the skull at the end of the sanity track eliminates the investigator.

How investigator skills work

Each original investigator has three skills.

One is a signature skill unique to that character; the other two come from a shared pool.

Skills begin at level 1 and improve when the investigator crosses Insanity Thresholds.

Some skill levels replace earlier text while others add to existing effects, so a character can change dramatically as sanity falls.

How the Mythos deck is built

The base-game Mythos deck combines cards from both halves of the current scenario:

• 8 Mythos cards from the Episode
• 8 Mythos cards from the Elder One

The resulting 16-card deck controls monster movement, summoning, special effects, sanity pressure and Elder One progression.

This is another reason Episode/Elder One combinations feel different: changing the boss also changes half of the Mythos deck.

How Elder One summoning advances

Most Mythos cards display an Elder One Summoning symbol.

When the discard pile contains three Summoning symbols, the Elder One advances on the Summoning track and the Mythos discard pile is shuffled back into the deck.

The Elder One is summoned if it reaches the first red space — or immediately at the end of the turn in which the investigators disrupt the ritual.

If the Progression token eventually reaches the end of the Summoning track, the investigators lose.

Investigate or Fight after Mythos

After resolving the Mythos card, the active investigator reaches the Investigate or Fight step.

If the investigator is in a Safe space, they can generally interact with the Episode’s Discovery system and potentially claim Items, Companions or Conditions.

If enemies are present, combat pressure replaces that safer investigation opportunity.

This gives positioning another layer: ending your action phase in a Safe space can be valuable even if no immediate Rest action is required.

How Fire works

Leaving a space containing Fire can put Fire tokens on the investigator.

During End of Turn, roll a standard die for every Fire token you carry. Successes deal wounds and tentacles cost sanity, after which those personal Fire tokens are discarded.

Because Stress can reroll these dice, surviving Fire may consume the same resource you were saving for attacks or defense.

Why you must disrupt the ritual

Every Episode defines its own ritual objective.

The Elder One cannot be attacked or damaged until that ritual is disrupted, even if the Elder One has already been summoned onto the map.

Once disruption occurs, the Elder One is summoned at the end of that turn if it was not already present, and it becomes vulnerable.

This creates two broad stages to most games: solve the Episode’s ritual problem, then survive the boss fight.

How Elder One stages work

Elder Ones use a sequence of Stage cards.

When summoned, later stages begin to reveal. Each new stage can add:

• A one-time reveal effect.
• An ongoing effect.
• Additional attack dice.
• A fresh health value that must be defeated.

When one stage is defeated, excess damage does not carry into the next stage.

Earlier revealed stage effects and dice remain active, so the Elder One becomes progressively more dangerous as the fight continues.

What happens when an investigator dies?

The timing is crucial.

If an investigator dies or is consumed by madness before the Elder One has been summoned, the group immediately loses.

Once the Elder One is already on the board, a dead investigator is removed but the surviving investigators may continue trying to win.

This encourages the team to protect every investigator during the ritual stage, then accept increasingly desperate sacrifices during the final boss fight.

How solo play works

The original rulebook includes an official single-player mode.

For solo setup, choose two investigators and control both, alternating turns between them.

There is no separate automated enemy player because the Mythos, Episode and Elder One systems already run the hostile side.

This makes solo mechanically straightforward, although managing two investigators means coordinating two different skill sets, insanity effects and inventories.

What is the best player count?

The official range is 1–5 players. BoardGameGeek community voting currently favors three players, with 1–4 broadly recommended.

Higher counts provide more specialized investigators and actions before each character’s next turn, but more bodies also create more tactical coordination and longer sessions.

Solo uses two investigators rather than one, so even the one-player game retains cooperative-style character synergies.

What is the Season 2 Expansion?

Season 2 expands the original Death May Die system rather than replacing it.

It adds additional investigators and Episodes that can be combined with compatible Elder Ones using the same modular structure.

Players interested in expanding the original 2019 core without changing its baseline rules can therefore add Season 2 content directly into their Episode/Elder One pool.

What is Fear of the Unknown?

Cthulhu: Death May Die – Fear of the Unknown is a later standalone core box.

CMON explicitly states that you do not need Season 1 to play it and that it is fully compatible with previous Death May Die products.

That makes it both an alternate entry point for new players and a major modular expansion for existing collections.

Unknown Monsters and Relics

Fear of the Unknown introduces optional Unknown Rules for players wanting additional difficulty and variability.

Unknown Monsters can be added on top of the normal Episode/Elder One enemies, while Unknown Mythos cards help activate them.

Investigators can also begin with Relics. When an investigator reaches the required insanity threshold, the Relic transforms to a stronger side.

These rules are optional and the Fear of the Unknown rulebook specifically warns that they increase difficulty.

Are the different Death May Die seasons compatible?

The system is deliberately modular.

CMON confirms that Fear of the Unknown is compatible with Seasons 1 and 2, and later Forbidden Reaches design material describes Campaign Mode as able to use Episodes from across the Death May Die sets and any existing Elder One as the final boss.

However, specific promos, Lost Episodes and special content can require a particular season because they depend on its components.

Always check the individual expansion box rather than assuming every promotional item is completely standalone.

What is Forbidden Reaches?

Forbidden Reaches is the next standalone core-box generation and is described by its designers as Season 5.

Its biggest systemic addition is Campaign Mode.

Instead of playing only isolated Episodes, a Campaign connects three Episodes in sequence through an overarching narrative deck.

The designers state that Episodes can come from different Death May Die sets and that any existing Elder One can be selected as the final boss, preserving the modular philosophy of the series.

How Forbidden Reaches Campaign Mode works

A Campaign Deck links three Episodes into a short arc.

The system adds narrative and persistence without converting Death May Die into a destructive legacy game.

The Forbidden Reaches core box was announced with three Campaigns, while the Season 6 Expansion adds two. The crowdfunding campaign also offered an Extra Campaigns Expansion with three additional campaign decks.

This creates a new search/collection distinction: Episodes remain modular one-shot content, while Campaign decks determine how several Episodes are connected.

What is Season 6?

Season 6 is an expansion produced alongside Forbidden Reaches.

Campaign material from the project states that Season 6 contributes additional campaign content and new investigators/monsters rather than functioning as the main new core entry point.

New players interested in the upcoming generation should therefore distinguish Forbidden Reaches (Season 5 core) from Season 6 Expansion.

Forbidden Reaches and Season 6 status in October 2026

The current Gamefound production timeline shows that the project is still being manufactured.

Update #97, dated September 25, 2026, says typesetting proofs were complete and corrections were being applied before factory submission.

The preceding September 11 update targeted Q4 2026 for mass production.

Accordingly, this guide does not present Forbidden Reaches or Season 6 as universally delivered retail products yet.

What is the Godzilla content?

The Forbidden Reaches campaign also introduced licensed Godzilla crossover content.

The designers described two Epic Episodes: Godzilla Rising and Godzilla vs. Cthulhu.

This material was part of the crowdfunding product ecosystem, so buyers should check exact pledge/add-on availability rather than assuming it is included in every Forbidden Reaches retail box.

Death May Die product-line overview

Which Death May Die box should a new player buy first?

For a new player choosing among available products:

• Original Core — best if you want the proven classic Episodes and Cthulhu/Hastur immediately.
• Fear of the Unknown — a standalone alternative core and the cleaner entry if its newer investigators/Elder Ones appeal more.
• Forbidden Reaches — compelling if Campaign Mode is the priority, but as of October 2026 it is still in production rather than a normal universally delivered retail product.

You do not need to buy every season to start playing.

Death May Die vs Arkham Horror: The Card Game

Death May Die vs Mansions of Madness

Eight strategy principles for new investigators

• Push sanity deliberately, not recklessly. Skill upgrades are essential, but the final sanity spaces are a hard elimination clock.
• Spend Stress where the roll genuinely changes the game. A reroll on a ritual check or boss attack is usually worth more than polishing a low-impact action.
• Do not rush the Elder One before the ritual plan is ready. A summoned but invulnerable Elder One can attack you while you still cannot damage it.
• Protect every investigator before summoning. A pre-summoning death causes an immediate group loss.
• Use movement to drag enemies strategically. Run can clear spaces for teammates but can also create dangerous monster piles.
• Rest before Stress and wounds simultaneously become critical. Safe spaces are opportunities, not guaranteed later.
• Specialize investigators. Signature skills and upgraded common skills make some characters far better at particular jobs.
• During the final fight, focus damage on the current Elder One stage. Excess damage does not carry over, so avoid wasting large attacks on nearly defeated stages when another investigator can finish them efficiently.

Eight things to know before buying

• The original core is already highly replayable. You do not need every season.
• Fear of the Unknown is standalone. Season 1 is not required.
• The line is modular but not every promo is universally standalone.
• Solo officially uses two investigators.
• Dice randomness is central. Stress and skills mitigate it but do not remove it.
• Investigator elimination can occur. After the Elder One is summoned, the survivors may continue.
• Forbidden Reaches is still in production as of October 2026.
• Crowdfunding bundles can contain exclusives and crossover content. Check exact box contents rather than assuming a marketplace “all-in” listing matches another pledge.

Cthulhu: Death May Die FAQ

How many players?

1–5 players.

How long does a game take?

BoardGameGeek lists roughly 90–120 minutes.

Who designed it?

Rob Daviau and Eric M. Lang.

How many actions do you take?

Normally three actions on each investigator turn.

Can you attack the Elder One before disrupting the ritual?

No. The Elder One cannot be attacked or damaged until the Episode’s ritual is disrupted.

Why is losing sanity useful?

Reaching Insanity Thresholds triggers your Insanity but also upgrades a skill and can provide permanent bonus dice.

Can sanity be healed by Resting?

No. Rest heals wounds and/or Stress, not sanity.

Can Death May Die be played solo?

Yes. The original solo setup has one player control two investigators.

Is Fear of the Unknown standalone?

Yes. CMON states that it does not require Season 1 and is fully compatible with earlier Death May Die products.

What is Forbidden Reaches?

The Season 5 standalone core box, adding new content and a Campaign Mode that links three Episodes.

What is Season 6?

An additional expansion being produced alongside Forbidden Reaches.

Has Forbidden Reaches shipped?

As of October 10, 2026, the project remains in production; the latest September updates show files/plastics progressing toward factory production.

Sources and scope

• CMON: original official rulebook — modular setup, actions, sanity, skills, Mythos, ritual, Elder One stages and solo setup
• CMON: original game overview
• CMON Support: Fear of the Unknown is standalone
• CMON Support: Fear of the Unknown compatibility with Seasons 1 and 2
• CMON: Fear of the Unknown rules — Unknown Monsters and Relics
• CMON: Forbidden Reaches design, Season 5 status, Campaign Mode and Godzilla episodes
• Gamefound: current Forbidden Reaches / Season 6 production updates
• BoardGameGeek: current ranking, ratings, player count, play time and complexity

Checked October 10, 2026. The Death May Die line spans retail, crowdfunding and promotional content, so availability varies by product and region. Forbidden Reaches and Season 6 are described using their current production status rather than assumed future retail availability. Strategy and buying guidance are original editorial analysis; no firsthand review or playtest is claimed. Editorial policy and corrections.