a murder mystery engine

FOUL PLAY

Everyone lies. One of them killed. Catch the contradiction.

Couch co-op · One screen or many · 4-letter room codes · No app to install

The body

Every case opens with a corpse, a place, and a circle of suspects who were all there.

The lies

Question them. Each one has a story — and the guilty one's story doesn't quite hold together.

The proof

The contradiction is real, written into the case and provable. Find it, and you've found your killer.

A mystery that actually plays fair

No AI hand-waving. The truth is decided before you sit down, and every clue points to a contradiction the engine can prove.

Pre-written truth

The killer, motive, and timeline are locked in before play begins — the AI never changes the answer on you.

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Code-proven clues

Contradictions are verified by the engine, so the case is always solvable from the evidence in front of you.

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Built for the couch

Pass-and-play on one screen, or everyone on their own phone. Designed for game night, not a lonely chatbot.

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Three ways to play

Jump into a hosted case with friends, take on the solo Daily Case everyone gets, or host your own table.

The Daily Case

A fresh mystery every day — the same case for everyone. Solve it, climb the ranks from rookie to closer.

Today’s case →

Someone in this room is lying.

Pour a drink, gather the suspects, and find out who.

Step inside →