Interactive whodunits
Can you solve a murder?
Handcrafted whodunits with real, sealed solutions. Question a living cast, search the scene, and accuse when you are ready.
Plays in your browser · No download · First case free
How a case works
You are the detective
Take the case
Every mystery opens with your role, a dossier, and a place in the story. You are not reading about a detective: you are the one they sent for.
Work the scene
Interrogate suspects who remember, deflect, and slip. Search the rooms, gather evidence, and fill in the map as the night unfolds.
Accuse when ready
Name the culprit, the method, and the motive. The solution was sealed before you began: either you cracked it, or you did not.
Sample play
A few moments in a case
Every mystery works like this: type what you would say or do in plain language, and the case answers — whether you inspect a clue, follow a lead, or press a suspect.
The manor looms against the storm. A crystal vase lies shattered on the marble. Rainwater pools near the east door, and the grandfather clock has stopped at eleven.
The pieces scatter outward, as if struck from above. Among the shards, a single black thread. Near the east door, a wet boot-print points toward the library — a man's boot, not the polished shoes the staff wear.
A fire smolders in the hearth of the library. On the desk, a ledger lies open to tonight's date. A brass key glints in the ash.
The key turns with a dry click. Inside: a letter signed by Mr. Vale, dated yesterday. “If you expose me, I will have no choice.”
The conservatory is on the west side — far from the east door, the broken vase, and the footprint that points away from it.
You write in plain language. The mystery answers.
The detective's toolkit
Everything you notice, kept close
The dossier
Every case opens with what your detective already knows — who you are, why you were called, and who is who. Reread it any time.
The sketch map
Your own floor plan, drawn as you go. Rooms you have only heard of stay faint pencil until you see them yourself.
The cast
Portraits and front matter on everyone you meet — and a face for whoever is in the room with you right now.
Evidence & notebook
What you carry, and a private scratchpad the game never reads. Theorize freely — your suspicions stay yours.
Why MysteryTrove
A trove of real mysteries
Sealed solutions
Every case is authored by hand with one fixed truth. The AI performs the world; it never invents the ending. Fair play, always.
A cast that talks back
Ask anything, in your own words. Suspects hold grudges, keep secrets, and crack under the right pressure.
No two nights alike
The story reacts to you. Scenes, conversations, and trouble unfold differently every time you play.
A detective's toolkit
Case dossier, fog-of-war map, evidence in hand, and a private notebook. Everything you notice, kept close.
Questions
Fair to ask
Is the AI making the mystery up as it goes?
No. Every case is written by hand with one sealed solution before you ever play. The AI performs the world and its characters — it never changes the truth, never invents the ending, and never lets a secret slip early.
Do I need to download or install anything?
Nothing at all. Every case plays right in your browser, and your investigation is saved as you go.
Can I play on my phone?
Yes. The whole investigation — questioning, searching, the map, your notes — works on any screen.
Do I need an account?
Not to start — the first case is free and opens straight away. Sign in when you want your shelf and progress to follow you across devices.
What does it cost?
Your first case is free, start to finish. A membership unlocks the full gallery, harder cases, and invitation-only investigations.
Can you solve a murder?
Your first case is free. Memberships unlock the full gallery, harder cases, and invitation-only investigations.