Buyer's guide · Updated June 2026
In an AI roleplay detective game you do not pick questions from a menu — you play the detective and talk to AI characters in your own words: interrogate suspects, follow up on what they let slip, and catch them in a lie. The field runs from polished games to open chat platforms and unmaintained tech demos, so here are the ones genuinely worth playing, sorted by how much of a real game they are.
Disclosure: we make Perdify, our top pick. The list stays honest — we flag which entries are real games versus chat platforms or abandoned demos, and which platform each runs on. Verified June 2026.
| Game | Platform | Price | Voice | Case or sandbox |
|---|---|---|---|---|
| PerdifyOur pick | iPhone, iPad | Free | Yes | Authored case |
| Vaudeville | PC (Steam) | Paid (~$20) | Yes | Authored case |
| Krimi | iOS, Web | Freemium | No | AI-generated case |
| StoryZone | iOS, Android, Web | Freemium | No | Open sandbox |
| AI Dungeon | Web, iOS, Android, Steam | Freemium | No | Open sandbox |
| Typhoon Detective Game | Web | Free (demo) | No | AI-generated case |
"Voice" means you can question characters by speaking, not just typing. "Case or sandbox" separates games with an authored or generated mystery to solve from open roleplay where you improvise your own story. Verified June 2026 — check each store for current details.
Best roleplay on iPhone — and the only one with voice
Disclosure: we make Perdify. Of everything here, it is the most game-like way to role-play a detective on your phone — and the only one where you interrogate suspects out loud. You speak or type to a cast of AI suspects who stay in character, improvise, lie, and remember what you asked three questions ago; you press them on contradictions and accuse the killer. Free on iPhone and iPad.
Get Perdify free→Best full roleplay on PC (with voice)
The PC reference point for AI detective roleplay: you play Detective Martini in a noir town and question LLM-driven townsfolk by typing or speaking into your mic. It commits to the full fantasy — a real case, locations, and multiple endings. Honest caveat: its Steam reviews are "Mixed," with gripes about stiff AI voices and slow replies, and it is a paid, PC-only title.
Where to play Vaudeville →Best for endless cases
The closest direct analog to Perdify on the web: read a case file, interrogate AI suspects in free text, watch for deception cues, and name the culprit — with endless AI-generated cases so you never run dry. It runs on iPhone and in the browser. Trade-off: it is text-only, and AI-generated cases can feel repetitive over long sessions.
Where to play Krimi →Best open-ended detective roleplay
If you want open-ended roleplay rather than a fixed case, StoryZone lets you type any action and improvise your own crime story — "Crime & Detective" is one of its many genres. It is polished, cross-platform, and well-reviewed. The catch: it is a broad roleplay sandbox, so there is no built-in suspect roster, evidence, or accusation — you bring the structure.
Where to play StoryZone →Best pure sandbox
The original go-anywhere AI text adventure. Spin up a detective scenario and the AI improvises a world you can investigate however you like — total freedom, zero rails. That openness is also the limit: there is no authored case, no designed mystery, and quality swings with whatever the model invents. A sandbox to improvise in, not a game with a solution to reach.
Where to play AI Dungeon →Best free, no-install try
A free, no-install browser demo from an LLM maker: pick a procedurally generated case, interview suspects in natural language, then accuse with evidence. It is a genuine AI-detective loop and a fun five-minute try. Honest framing: it is an unmaintained tech demo (its code was archived in early 2026), text-only, with no authored content.
Where to play Typhoon Detective Game →These rank for "AI roleplay detective" but are not detective games — they are general chat platforms, a different genre, or simply offline. Worth knowing so you do not waste a download.
It is a game where you role-play a detective and converse with AI characters in your own words — interrogating suspects and chasing leads — instead of choosing from scripted dialogue options. Because the characters are driven by AI, they improvise in character and no two conversations play out the same way.
Perdify: it is free, it is the most game-like (authored cases, evidence, and a real accusation), and it is the only one on iPhone where you can interrogate suspects by voice. Krimi and StoryZone are solid text-based alternatives that also run on iOS.
In Perdify, yes — you can interrogate suspects out loud on iPhone and iPad. On PC, Vaudeville also supports microphone input. Most other AI detective games, including Krimi, StoryZone, and the Typhoon demo, are text-only.
Yes. Perdify is free on iPhone, StoryZone has a free tier, and the Typhoon Detective demo is free to play in the browser. Vaudeville is a paid PC game, while Krimi and AI Dungeon are freemium.
No. Those are AI chat and roleplay platforms where "detective" is just one scenario you can prompt — there is no authored case, no evidence system, and no way to win. For an actual detective game, pick one of the games listed above rather than a general chat platform.
If you want a real mystery to solve, pick a structured game like Perdify or Vaudeville. If you would rather improvise your own story with no rails, an open sandbox like AI Dungeon or StoryZone fits better. Perdify aims for the middle: an authored case you investigate through completely free conversation.
Perdify is free on iPhone and iPad. Pick a case, interrogate the AI suspects by voice or text, catch the one who is lying, and accuse the killer.
Download on the App Store→Related: best AI murder mystery games · single-player social deduction games · how Perdify works.