
- BGG rank
- BGG #141
- BGG rating
- 8.0
Tainted Grail: The Fall of Avalon
- 1–4 players
- 60–120 min
- Complexity 3.4/5
- 2019

Expansion for Warhammer Underworlds: Nightvault
2019
Rules assistance for Warhammer Underworlds: Nightvault – Forbidden Chambers Board 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.
Warhammer Underworlds: Nightvault – Forbidden Chambers Board Pack is an expansion for Warhammer Underworlds: Nightvault released in 2019 for 2 players, 30–60 minutes per game, and ages 12 and up. Its main mechanics are Dice Rolling and Campaign / Battle Card Driven.
Give yourself extra tactical options in Warhammer Underworlds with this special double-sided board pack! This board section has been expertly designed to offer new challenges and opportunities for your warband. On one side, you'll find a group of three lethal hexes make for a deadly deterrent, while the other lets you keep your warband close together with three adjacent starter hexes. If you're looking to surprise your foes and shake up your strategy, this set is for you! This board is exactly the same dimensions as those provided in the Warhammer Underworlds: Nightvault game, and constructed from the same durable card. —description from the publisher
Warhammer Underworlds: Nightvault – Forbidden Chambers Board Pack supports 2 players according to the catalogue. This is the publisher’s listed player count, so the game is designed for exactly that number of participants. Variants for other group sizes, if any, are described in the rulebook of your edition, so check it before setting up a different configuration.
The listed playing time for Warhammer Underworlds: Nightvault – Forbidden Chambers Board Pack is 30–60 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 Warhammer Underworlds: Nightvault – Forbidden Chambers Board Pack 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.
Warhammer Underworlds: Nightvault – Forbidden Chambers Board Pack belongs to these categories: Fantasy, Fighting, and Expansion for Base-game. Its main mechanics are Dice Rolling and Campaign / Battle Card Driven. 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 catalogue lists Warhammer Underworlds: Nightvault – Forbidden Chambers Board Pack as an expansion for Warhammer Underworlds: Nightvault. Expansions add new content, rules or scenarios to the base game and usually cannot be played on their own, so you need Warhammer Underworlds: Nightvault to use it. Check that your edition of Warhammer Underworlds: Nightvault is compatible, as some expansions were revised between editions.