One Deck Dungeon Abyssal Depths Expansion


Out of stock

Drip… drip… drip… something is lurking in the Abyssal Depths, and it promises to make any excursion into the dungeon even more perilous!

The Abyssal Depths brings a completely new mechanic to the game – 6 terrifying Fiends who hound you throughout your entire quest to reach the boss:

  • Endless Kelp

  • Merflection

  • Sharkwisp

  • Spout Elemental

  • Terrorshell

  • Tidal Snake

Fiends have their own challenge boxes that can be filled at any time, even over multiple encounters. By filling all the boxes you can confront the Fiend, reduce its terrible effects, and claim a bonus! However, the Fiend won’t give up so easily – the Threat Level rises again whenever you descend.

Heroes Abyssal Depths also brings 2 new heroes to the fight: The magical Aquamancer brings a tsunami of heroic dice to the fight, while the Stalwart Dragoon wields her trident with considerable strength.

*This is not a standalone game, a copy of the One Deck Dungeon Board Game is required to play. The Tidal Snake Fiend requires the One Deck Dungeon Forest of Shadows Board Game to play.

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UPC: 859358006123 SKU: ASN0082 Categories: ,

What is Abyssal Depths?


Abyssal Depths Playthrough

Meeples logo Favicon
Weight 0.035 kg
Dimensions 15 × 9 × 0.5 cm




Minimum Suggested Age 14
Average Play Time 15 - 45 minutes
BGG Complexity 2.67
Expansion Yes
Download Rulebook


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