Betrayal at Baldur's Gate – D&D Meets Hidden Traitor

Explore the dark alleys and catacombs of Baldur's Gate — until one hero betrays the rest. 50 unique haunts, 12 adventurers, and no two games alike.

Betrayal at Baldur's Gate is one of the most original D&D board games ever created. Published by Avalon Hill, it takes the beloved hidden traitor mechanics of Betrayal at House on the Hill and transplants them into the dark, dangerous city of Baldur's Gate — delivering a game where every session tells a completely different story.

Players explore the city together, discover omens, and build a modular tile map of Baldur's Gate's streets and catacombs. Then — when the haunt triggers — one hero becomes a traitor with their own secret agenda, and the rest must figure out how to survive. With 50 different haunts drawn from D&D lore, no two games ever play out the same way.

Players who discover Betrayal at Baldur's Gate consistently describe the moment the haunt triggers as one of the most memorable in all of board gaming — the shift from cooperative exploration to sudden betrayal creates a tension that nothing else quite replicates, and the D&D setting gives it an authenticity the original haunted house version lacks for fantasy fans.

How to Play — Watch First

What Is Betrayal at Baldur's Gate?

Betrayal at Baldur's Gate is a semi-cooperative exploration and hidden traitor game for 3 to 6 players. Players choose from 12 pre-generated D&D adventurers — each with unique abilities — and explore Baldur's Gate by drawing tiles, revealing new city streets and underground catacombs.

As heroes explore, they collect items, trigger events, and discover omens. Each omen triggers a haunt roll — and when the haunt finally triggers, the Betrayal Book reveals which player becomes the traitor and what terrifying scenario unfolds. The remaining heroes must work together to stop the traitor's plan before it succeeds.

The Two Phases

The 12 Adventurers

How Does the D&D Setting Change Things?

The original Betrayal at House on the Hill uses a haunted mansion with gothic horror. Baldur's Gate replaces that with dark fantasy — city streets, catacombs, taverns, and temples replace the mansion's rooms. The omens and events draw from classic D&D lore: cursed artifacts, demonic possession, the shadow of Bhaal.

The character abilities feel authentically D&D. The Wizard's Eldritch Blast, the Monk's Flurry of Blows, the Rogue's cunning — each adventurer plays differently and rewards players who understand their character's strengths. For D&D fans, the familiarity of the setting adds a layer of immersion the original Betrayal can't match.

The two-level map — city streets above and catacombs below — creates more spatial complexity than the original game, with different tile types and encounters in each zone. The haunt roll mechanism is also adjusted: players roll dice equal to the number of omen cards already revealed, triggering on 6 or higher rather than a flat roll — making early haunts less likely and building genuine tension as omens accumulate.

Rating Breakdown

Pros & Cons

Who Is This Game For?