What's the basic idea behind Cthulhu Wars?
Cthulhu Wars is an asymmetric area-control strategy game for 2 to 4 players (expandable to 8 with expansions) set in a Lovecraftian apocalypse. Each player commands a different Great Old One faction, spending Power to summon monsters, claim Gates across a map of Earth, battle rival factions, and earn spellbooks that change how your faction operates. The first faction to reach 30 Doom points triggers the end of the game. At that point, whoever has scored the most wins.
Every faction plays completely differently. That's the whole point. The Cthulhu Wars rulebook isn't just telling you how to move pieces. It's giving you a toolkit for four (or more) distinct experiences at the same table.
What does a round of Cthulhu Wars actually look like?
Each round follows a clear sequence. Once you've played through it once, the rhythm feels natural.
Step 1: Gather Power
Every player starts the round with a fixed amount of Power, then adds more for each Gate they control on the board. Power is everything. You spend it on every action (summoning units, moving them, building Gates, awakening your Great Old One). Run out mid-round and your turn is over, whether you're ready or not.
This creates real pressure. Do you spread out fast to grab more Power income, or consolidate to protect what you have? That tension is baked into every decision from the first round.
Step 2: Take Actions
Players alternate taking one action at a time, spending Power as they go. The core actions available to all factions are:
- Summon a unit onto the map (from your faction's pool)
- Move any number of your units from one area to adjacent areas
- Build a Gate in an area you hold without enemy units present
- Capture a Gate your units are standing on
- Awaken your Great Old One once the ritual conditions are met
- Unlock a Spellbook by meeting its specific requirement
Action costs vary by faction. One thing the Cthulhu Wars rulebook makes clear early: these general actions are a framework. Each faction bends them, replaces some, or adds entirely new ones via spellbooks.
Step 3: Fight Over Territory
Combat is mandatory when opposing factions share an area. Both sides roll custom combat dice, and each die face shows either a kill (eliminating an enemy unit) or a pain (which the defender uses to take casualties on their own terms). Factions with their Great Old One present hit harder. Factions with earned spellbooks gain modifiers.
There are no static defensive lines in Cthulhu Wars. Units move freely, which means the map shifts every round. An area you held comfortably last turn can become a three-way fight this turn.
Step 4: Score Doom
At the end of each round, every player scores Doom points for each Gate they control. Some spellbooks and faction abilities add bonus Doom under specific conditions. The round ends, Power resets, and you do it all again until someone hits 30 Doom. At that point, a final scoring phase resolves before the winner is declared.
What are spellbooks, and why do they matter?
Spellbooks are where the game gets deep.
Each faction has 6 spellbooks: permanent upgrades you earn during play by meeting specific conditions written on each card. Some are straightforward (build three Gates, then claim it). Others require defeating enemies in a specific way, or positioning your units in a certain pattern. Meeting the conditions and claiming a spellbook is a mid-game milestone that feels earned.
What spellbooks actually do varies wildly. One faction's spellbook might cut the cost of a summoning. Another might let your units attack from a distance, or give your Great Old One an ability that has no equivalent in any other faction. By the mid-game, two factions that started with the same general action menu are playing completely different games.
This is what the Cthulhu Wars rulebook is really delivering: a shared skeleton with four (or more) distinct bodies. BoardGameGeek rates Cthulhu Wars as one of the best-ranked asymmetric strategy games in its weight class, largely because this design holds together at every player count.
What do the four base factions actually play like?
The O4 Edition ships with four factions. Each one plays differently enough that the distinction is worth spelling out:
Great Cthulhu
The most direct faction to learn first. Great Cthulhu focuses on oceanic territory, summons a wide roster of cultists and Deep Ones, and benefits from a Great Old One that is genuinely threatening in combat. Cthulhu can also "hibernate" and resurface, which gives the faction a reset mechanic other factions don't have. Good starting point for new players.
Crawling Chaos (Nyarlathotep)
Plays through mobility and manipulation rather than brute force. Nyarlathotep's units move cheaply and unpredictably, and several spellbooks mess with other players' options. More layered than Great Cthulhu, and better suited to a player who's run through the rules once.
Black Goat (Shub-Niggurath)
A swarming, expansion-oriented faction built on sheer numbers. The Black Goat can flood the map with cheap units fast, which applies constant pressure. Managing your unit pool and knowing when to push is the skill floor here.
Yellow Sign (the King in Yellow)
A madness-spreading faction that wins through unusual scoring routes rather than raw area control. The Yellow Sign plays differently from round one. Some players find it the hardest to learn; others find it clicks immediately. Either way, it rewards patience and lateral thinking.
How much does the O4 Edition include?
This is not a small box. The Cthulhu Wars O4 Edition ships with 72 detailed 28mm miniatures, including 5 colossal Great Old One sculpts, a full-color mounted game board showing Earth, 6 faction spellbook cards per faction, custom dice, player aid cards, and the full rulebook. It weighs 13.2 pounds. When you put it on the table, that's obvious.
The game retails for $249.00. That price reflects what's in the box: premium miniatures, production quality well above standard retail, and a design with an active expansion ecosystem built around it. Collector-tier, not shelf-filler.
For hobbyists who want to go further, Petersen Games has released dozens of faction expansions, additional Great Old Ones, and alternative maps. The base game is complete on its own. The expansion ecosystem is substantial for those who want to grow it.
Is Cthulhu Wars hard to learn from the rulebook?
The core rules are accessible. The action menu is short, the Power economy is transparent, and the turn structure is consistent. Most groups are making meaningful decisions by mid-first-game.
Where complexity enters is faction-specific. Each faction introduces its own timing rules, unit abilities, and spellbook interactions. The Cthulhu Wars rulebook handles this by separating faction rules from the core rules. You learn the shared framework first, then layer in what makes your chosen faction tick. Tabletop coverage at Polygon has noted this kind of modular rules design as a growing standard in premium strategy games, and Cthulhu Wars was doing it before it was common.
First-game teaching typically goes: explain Power and Gates, run through action options, let everyone pick a faction with matching complexity, and play. Rules questions come up naturally and the rulebook answers them cleanly. Veterans of heavier strategy games will find the weight appropriate. Players new to asymmetric design may need a second session before everything clicks. That's normal and worth the patience.
One practical tip: use the player aid cards the game includes. They summarize each faction's action costs and spellbook conditions on a single card. You won't be flipping back to the rulebook mid-turn once everyone has their aid card in hand.
A useful third-party rules reference: the Cthulhu Wars forum on BoardGameGeek has an active community answering edge-case questions, with clarifications from the design team present throughout.
Ready to get it on the table?
If the rules overview makes sense and the design sounds like what you're looking for, the Cthulhu Wars O4 Edition is where to start. It includes everything for 2 to 4 players, scales to 8 with expansions, and is the most complete version of the game Petersen Games has produced.
Every faction in the box is different. That's not a claim — it's what the rulebook is built around. Pick one that sounds right for your group, run through a first session, and see which corner of the Lovecraft mythos you want to command.
Get the Cthulhu Wars O4 Edition →
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