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LLM Murder Mystery Party

Every guest gets a secret character while an AI narrator runs the mystery.

Intermediate16h1–3 people17/20 fit
TL;DR

Build LLM Murder Mystery Party for friend groups in ~16h with 1–3 people. Stack: LLM + Socket.IO + Next.js.

Why it wins: Social and replayable.

Build flow

01 · Problem
Mystery party kits are fixed and need a host.
02 · Solution
Generate a mystery with roles, clues and a solution, deliver private clues to each phone and let the AI narrator respond to accusations.
03 · Build
  1. 1Generate structure
  2. 2Assign roles
  3. 3Sync phones
  4. 4Narrate
04 · Demo
Run a short mystery with three players.

MVP checklist

  • Generated mystery
  • Private clues
  • AI narrator
  • Accusation round

Tech stack

TechRole
LLMLanguage model
Socket.IORealtime multiplayer
Next.jsFrontend + API routes

Reference repos

Open-source projects you can build on. Links checked 2026-10-31.

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