Quick answer
Start with Arkham Horror Third Edition for the full Roaring Twenties investigation experience. Add Under Dark Waves when you want coastal horror, new scenarios, and a deeper challenge.
What each product delivers
Arkham Horror Third Edition is the complete base game set in 1926 Arkham. It includes the core investigation mechanics, multiple Ancient Ones, and a campaign that pits investigators against alien entities. The catalog price of USD 59.39 (down from USD 89.99) makes it an accessible entry point.
Under Dark Waves is a large box expansion that shifts the action to the New England coast. It adds fog, strange lights, and missing villagers — a different atmosphere from the speakeasies of the base game. At USD 44.84 (catalog comparison USD 64.99), it expands the game without replacing it.
The trade-off: atmosphere vs. foundation
The base game gives you the core rules, characters, and a full campaign. The expansion layers on coastal horror but requires the base game to play. If you buy Under Dark Waves first, you will not have the core components needed to play.
For players who already own the base game, the expansion offers a distinct new setting and additional scenarios. The trade-off is that the expansion does not replace the base game — it enhances it.
Trade-offs at a glance
- Start with Arkham Horror Third Edition if: You want the complete base game with the core rules, a full campaign, and the 1926 Arkham setting. It is the foundation for all expansions.
- Add Under Dark Waves if: You already own the base game and want a new coastal setting, new scenarios, and a different horror atmosphere. The expansion requires the base game.
- Skip Under Dark Waves if: You prefer the urban speakeasy vibe and do not want to invest in a large box expansion for a different setting. The base game offers plenty of content on its own. The expansion does not replace the base game; it adds a new layer of horror.
Product facts at a glance
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Arkham Horror Third Edition: The year is 1926, and it is the height of the Roaring Twenties. Flappers dance till dawn in smoke-filled speakeasies. This sets the tone for the base game's urban investigation and party atmosphere, which contrasts with the expansion's coastal horror.
Arkham Horror Third Edition
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Arkham Horror: Under Dark Waves Expansion: Cold salt waves beat on the New England coast and thick fog rolls in off the bay, obscuring the small fishing hamlets. This expansion shifts the setting to a foggy, isolated coastal area, adding new environmental challenges and mysteries.
Arkham Horror: Under Dark Waves Expansion
Which should you choose?
Best for
- New players who want the complete Arkham Horror experience from the start
- Players who enjoy the 1920s urban investigation theme and want the core game first
Not for
- Players who want a standalone expansion that does not require the base game
- Those who prefer a single, all-in-one box without needing to buy additional content
