Betrayal at House on the Hill
Betrayal at House on the Hill 3rd Edition explained: exploration, the Haunt, traitor scenarios, movement, checks and key decisions.
Explore a haunted mansion room by room, discovering items, events and omens while the house grows in a different shape each game.
Eventually an omen triggers a Haunt. The scenario then changes the objectives and may turn one explorer into a traitor against the rest of the group.
Why We Love It
Betrayal changes genre halfway through the session: cooperative exploration becomes a scenario-specific conflict. The modular house and large Haunt set make uncertainty part of the experience.
About Betrayal at House on the Hill
Explore a haunted mansion room by room, discovering items, events and omens while the house grows in a different shape each game.
Eventually an omen triggers a Haunt. The scenario then changes the objectives and may turn one explorer into a traitor against the rest of the group.
Game at a Glance
Build the House
Add rooms as explorers move through unexplored doors.
Resolve Discoveries
Rooms can trigger events, items and omens.
Trigger the Haunt
Omen checks eventually select a scenario and new objectives.
Survive the Betrayal
Follow the scenario books once the traitor and heroes receive separate goals.
Who Betrayal at House on the Hill suits
Groups that enjoy narrative surprises, modular maps and asymmetric scenarios more than perfectly predictable strategy.
Rules overview
On a turn, move through rooms up to your Speed and resolve room text or any event, item or omen card you discover. Omen discoveries require a Haunt roll. Once the Haunt begins, use the scenario chart and the two scenario books to determine the traitor, objectives and special rules.
Key decisions
Editorial analysis: Before the Haunt, explore without scattering so widely that cooperation becomes difficult. Track useful items and which routes connect the house. After the Haunt, stop applying assumptions from the exploration phase: the scenario text overrides the normal objective and often changes what information each side has.
Common questions
When does the Haunt start?
After an omen is discovered, resolve the edition’s Haunt roll procedure. The result can trigger the scenario.
Is there always a traitor?
Many Haunts use a traitor, but the exact structure is determined by the selected scenario.
Do normal rules still apply during the Haunt?
Yes unless the selected Haunt explicitly changes them. Scenario-specific text takes priority where it conflicts.
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Sources and edition notes
Facts checked September 16, 2026. Strategy sections are editorial analysis based on the identified rules rather than measured win-rate claims.