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About Two Rooms and a Boom
Two Rooms and a Boom is a social deduction game built for large groups, from six up to thirty. Players are split between two rooms and dealt a secret team card; the Blue team has a President and the Red team has a Bomber. Each room elects a leader, who sends hostages across at the end of each timed round. If the Bomber ends up with the President, Red wins.
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Is Two Rooms and a Boom Right for You?
Best for
Two Rooms and a Boom is for large groups: clubs, big parties, youth groups and office socials. It handles up to thirty people, a game lasts minutes, and the base rules fit on a single card. We like it best at ten or more, when the rooms feel crowded and rumours travel faster than facts.
Maybe skip it if…
It needs two spaces out of earshot of each other and a group comfortable with lying and arguing. At six it feels thin, and quieter players can be steamrolled by the loud ones.
How to Play Two Rooms and a Boom
Setup
Deal a card to each player, split everyone evenly into two rooms, and start the timer.
On Your Turn
- In each room, players point to elect a leader; a majority can replace the leader at any time.
- Talk, bluff, and show your card or just its colour to other players to build trust.
- When the timer ends, the leaders swap the chosen hostages. Each round is shorter than the last.
How to Win
After the final exchange, Red wins if the Bomber is in the President's room; otherwise Blue wins.
💡 Strategy Tips
Ask to see cards early. Anyone who refuses to share for long is worth sending to the other room, or keeping, depending on your team.
Common Mistakes to Avoid
- Refusing to share your card. Early trust is everything, and a player who will not show anything is the obvious hostage.
- Electing the loudest person as leader. The leader picks who is sent away, so choose someone you have actually verified.
- Wasting the last round. It is the shortest, and it decides the game, so the plan needs to be settled before it starts.
- Forgetting the Gambler with odd numbers. It keeps the teams equal.
Advanced Strategy
- Share your card with one person you trust, then let them vouch for you to the rest of the room.
- If you are the President or the Bomber, you want to be in a particular room at the end. Work out how to be sent there without saying who you are.
- Watch who talks to the leader. Alliances form fast, and who is whispering to whom is information.
- Think about hostages two rounds ahead. The players you send now are the ones who can come back later.
Variants & House Rules
Extra characters
The box includes dozens of additional roles with their own powers and win conditions. Add two or three at a time once the basic game is understood.
Colour share only
Allow players to show only the colour of their card, never the full card. It makes the President and Bomber much harder to find.
Video Guides
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Our Verdict
Two Rooms and a Boom is the best game we know for a genuinely large crowd. It is simple, quick and chaotic in the right way, and it gets a room of strangers talking. If you regularly have ten or more people together, it is well worth owning.
Frequently Asked Questions
Do you really need two rooms?
You need two spaces where each group cannot hear the other. Opposite ends of a large hall can work.
How long does a game take?
The timed rounds last only a few minutes in total, so most groups play several games in a row.
What happens with an odd number of players?
Add the Gambler, a neutral character who announces at the end which team they think has won.