Getting Started
Complete beginner guide to Missing Witness: read the Case File, interrogate AI suspects, search rooms, organize clues, and submit a scored accusation. Solo online detective game.
June 5, 2026
What You Are Playing
Missing Witness is a browser-based solo detective game. You investigate authored murder cases by talking to AI suspects, searching locations, and writing a closing theory. An AI judge scores your reasoning against a hidden answer key — the same fairness model as commercial boxed whodunits, but without needing four friends and a free evening.
Step 1 — Case File & Opening
Each case opens with a synopsis and Case File summary: victim, setting, and suspects in broad strokes — no spoilers. Tap More for extended opening narrative that sets tone like the first chapter of a detective novel. Press Start to hear opening statements from every suspect. Note contradictions immediately: who sounds rehearsed, who changes details, who refuses a straight answer.
Step 2 — Interrogate in Group or Direct
Type questions in the group channel to address everyone, or tap a portrait to @mention one suspect. Group chat mimics a crowded drawing room — not everyone may reply. Directed questions force a single character to answer, like pulling someone aside at a live mystery party. There is no hidden button path; language is the interface.
Step 3 — Search & Organize
Under Investigation, click unscouted rooms. The judge extracts physical clues from each scene and adds them to your board. Use Organize Clues to merge testimony with evidence into a timeline. Strong players revisit rooms after learning a new name or time — real detectives do not treat first impressions as final.
Step 4 — Submit Your Theory
Write a complete accusation: killer, time, place, method, motive, and why others are innocent. The judge applies a weighted rubric per case and reveals the official story. Progress saves locally per case in your browser; switch cases from the dropdown anytime.
Guests, Accounts & Limits
The opening case, The Womb House, is free to play in full — no account needed to start. Every other case stays locked until you sign in and take a plan. Accounts track usage; investigation progress stays on your device. English plays at / and Chinese at /zh with separate save keys so languages do not mix progress.
