Two Rooms and a Boom: Necroboomicon Expansion Pack

About this expansion

Two Rooms and a Boom: Necroboomicon Expansion Pack is a 2017 expansion for 6–30 players, with a listed play time of 15 minutes.

Designed around an H.P. Lovecraft Cthulhu theme, Necroboomicon brings a darker atmosphere to the Two Rooms and a Boom experience. Players wrestle with fear and suspicion as they take on characters designed for “Hard Mode.”

The expansion was created to enhance Two Rooms and a Boom for smaller groups. Its most notable rule change allows color sharing in groups with fewer than eleven players, opening this feature to more compact sessions.

• Characters designed for “Hard Mode”
• H.P. Lovecraft Cthulhu theme
• Color sharing permitted with fewer than eleven players
• Designed to support smaller groups

The Necroboomicon Expansion Pack comes in a foil pack and focuses on adding thematic character options rather than presenting a standalone game. It is intended for players who want to extend their existing Two Rooms and a Boom sessions with a Lovecraftian twist and a more demanding experience.

For groups seeking a compact addition to their sessions, Two Rooms and a Boom: Necroboomicon Expansion Pack offers a focused way to explore fear, suspicion, and “Hard Mode” play across a broad player range.