
- BGG rank
- BGG #100
- BGG rating
- 8.6
Arkham Horror: The Card Game (Revised Core Set)
- 1–4 players
- 45–180 min
- Complexity 3.7/5
- 2021

Expansion for Arkham Horror: The Card Game
Rules assistance for Arkham Horror: The Card Game – Blood on the Altar: Mythos Pack
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.
Arkham Horror: The Card Game – Blood on the Altar: Mythos Pack is an expansion for Arkham Horror: The Card Game released in 2017 for 1–4 players, 60–120 minutes per game, and ages 14 and up. It was designed by Nate French and MJ Newman and its main mechanics are Variable Player Powers, Hand Management, and Cooperative Game.
Description from the publisher: Blood on the Altar is the third Mythos Pack in The Dunwich Legacy cycle for Arkham Horror: The Card Game. In the scenario from Blood on the Altar, your investigations lead you to the village of Dunwich, where you suspect a series of recent disappearances may be related to the events in Arkham. But the more you explore, the more you get the impression the townsfolk aren't exactly pleased to see you. There are secrets in this town that its inhabitants don't wish to share… With its sixty cards (including a complete playset of each new player card), Blood on the Altar challenges you to delve the secrets of Dunwich. You'll need to travel throughout the town in search of clues, stopping to investigate many of the locations infamously identified in H. P. Lovecraft's classic tale, The Dunwich Horror.
Arkham Horror: The Card Game – Blood on the Altar: Mythos Pack supports 1–4 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 Arkham Horror: The Card Game – Blood on the Altar: Mythos Pack is 60–120 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 Arkham Horror: The Card Game – Blood on the Altar: Mythos Pack for ages 14 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.
Arkham Horror: The Card Game – Blood on the Altar: Mythos Pack has a complexity rating of 3.5 out of 5 from BoardGameGeek players, which makes it a medium-weight 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.
Arkham Horror: The Card Game – Blood on the Altar: Mythos Pack belongs to these categories: Card Game, Fantasy, and Horror. Its main mechanics are Variable Player Powers, Hand Management, and Cooperative Game. 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 Arkham Horror: The Card Game – Blood on the Altar: Mythos Pack are: Nate French and MJ Newman. 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 Arkham Horror: The Card Game – Blood on the Altar: Mythos Pack as an expansion for Arkham Horror: The Card Game. Expansions add new content, rules or scenarios to the base game and usually cannot be played on their own, so you need Arkham Horror: The Card Game to use it. Check that your edition of Arkham Horror: The Card Game is compatible, as some expansions were revised between editions.