
- BGG rank
- BGG #5,341
- BGG rating
- 6.9
Cthulhu Wars: Duel
- 2 players
- 20–30 min
- Complexity 2.9/5
- 2020

Rules assistance for Cthulhu Wars: Library at Celaeno Map
Plain-language explanations of turns, card effects and disputed situations, with official source references and saved question history.

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Answers come from the official rulebook, with the page to check.
Cthulhu Wars: Library at Celaeno Map is an expansion for Cthulhu Wars released in 2017 for 2–5 players, 90 minutes per game, and ages 12 and up. It was designed by Sandy Petersen and its main mechanics are Variable Player Powers, Area Movement, and Dice Rolling.
The Library at Celaeno Map Expansion contains a new map with two figures, the Librarian and the Custodian. This map is inside the cyclopean alien facility in the Hyades, renowned in Lovecraft lore. This map includes Special Collections, where the first player to build a Gate can seize amazing new powers in the form of extra spellbooks. But beware! If you lose control of your Special Collection, your new spellbook becomes overdue, and the terrifying Librarian menaces you. The Custodian cleans up chambers by moving units in the Area to another Area termed the Oubliette. Over the course of the game, this Oubliette tends to get filled with units. Sometimes fights break out. The Librarian can only be activated if a player has an overdue Book, in which case it can wreak some real damage. Fortunately, you can mitigate the damage by returning the Book, though not necessarily eliminate all threat. The Library at Celaeno introduces a new mechanism in Cthulhu Wars: Silence tokens. These are used to trigger certain special actions including moving the Custodian, Librarian, and triggering some of the special Library books on this map.
Cthulhu Wars: Library at Celaeno Map supports 2–5 players according to the catalogue. This range comes from the publisher’s listed player count, so the game can be set up for any group size within it. Some setups, rules and scoring details may still vary by player count, so check your edition’s rulebook for the exact configuration.
The listed playing time for Cthulhu Wars: Library at Celaeno Map is 90 minutes. This is the publisher’s estimate for a full game. The actual duration depends on the group, the player count and familiarity with the rules: first sessions usually run longer, while experienced groups often finish faster. Setup and teaching time are not included in this estimate.
The catalogue lists Cthulhu Wars: Library at Celaeno Map for ages 12 and up. This is the publisher’s recommendation and reflects reading demands, rule complexity and small components rather than theme alone. Younger players can often join with help from an adult, so check the age guidance on your edition and consider your group’s experience with board games.
Cthulhu Wars: Library at Celaeno Map has a complexity rating of 4.0 out of 5 from BoardGameGeek players, which makes it a heavy game. The rating reflects how much rules knowledge, planning and decision-making a typical game demands. Expect a longer first teach for heavier games, and use a preparation guide before game night.
Cthulhu Wars: Library at Celaeno Map belongs to these categories: Horror, Miniatures, and Expansion for Base-game. Its main mechanics are Variable Player Powers, Area Movement, and Dice Rolling. Categories describe the theme and setting of a game, while mechanics describe what players actually do on their turns. Each mechanic links to a catalogue hub with similar games, which helps when you want something comparable.
The credited designers of Cthulhu Wars: Library at Celaeno Map are: Sandy Petersen. These credits come from the published game data and name the people responsible for the game’s design, not its illustrators or publishers. Designer pages on MeepleRules collect other titles by the same designers, which helps when you enjoy a game and want to find similar ones.
The catalogue lists Cthulhu Wars: Library at Celaeno Map as an expansion for Cthulhu Wars. Expansions add new content, rules or scenarios to the base game and usually cannot be played on their own, so you need Cthulhu Wars to use it. Check that your edition of Cthulhu Wars is compatible, as some expansions were revised between editions.