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Ask anything about Arkham Horror (Third Edition): Under Dark Waves: rules, setup, components, complexity, price, or whether it fits your group.
An epic expansion that plunges players into new horizons of cosmic horror.
- Immersive new scenarios
- Massive investigator variety
- Huge content volume
- Great terror mechanic
- Requires base game
- Heavy language dependency
About the game
What you do in a play session
This large-box expansion is a true feast for cosmic horror enthusiasts. You won't just be exploring new territories with double-sided tiles; you'll also have new faces to trust (or not!) in your crew. Eight new investigators join the fray, ranging from the drifter 'Ashcan' Pete to the dedicated letter carrier Stella Clark, each bringing unique skills to manage the chaos. And don't think the danger is strictly land-based; with four brand-new scenarios, the horror now arrives accompanied by dark waves and undersea mysteries that will make anyone question their own sanity.
The content is massive: over 150 new encounter and event cards, along with a flood of new assets, monsters, conditions, and items. A major highlight is the introduction of the terror mechanic, which cranks the tension up to an almost unbearable level. If you're already a fan of the third edition, this expansion is the essential fuel to keep your game nights filled with adrenaline and despair. Just remember: the ocean holds secrets that humanity was never meant to unearth, and in Under Dark Waves, the tides don't just bring salt—they bring the end!
Expansion for
Published additional content
Gallery
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Rules manual
Official PDF file
Best player count
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Soundtrack
Ambience suggested by Melodice
Where to Buy
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Price history — last 6 months (lowest new offer)
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Frequently Asked Questions
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