We build the cases we wanted to play.
Cold Case Vault started with a simple frustration. The mystery boxes on the shelf charged $30 for a single case and made you wait three weeks for the next instalment. The printables on Etsy were a coin flip — sometimes brilliant, sometimes barely typeset. Nothing in between.
So we built the in-between. Hand-curated, beautifully typeset, instantly downloadable cold case files. Twenty at launch, more every month. Print at home. Spread across your kitchen table. Read every witness statement, every letter, every autopsy note. Then name the killer.
Skeleton, AI writing, AI illustration, automated review.
Skeleton
Every case starts with a tight three-act skeleton — the crime, the suspects, the decisive clue. We tune for solvability, not surprise.
AI writing
AI writing tools draft every document — witness statements, autopsy notes, newspaper clippings — working from a strict voice profile per character and a style guide for the era.
AI illustration
Pen-and-ink mugshots, crime-scene sketches, and evidence photographs are AI-generated to be era-appropriate and to print cleanly in black and white.
Automated review
Each case runs through an automated multimodal evaluator that checks consistency, solvability, fictional-naming discipline, and content suitability. Cases that fail are sent back through the pipeline. A sample is also reviewed by our editorial team before publication.
Cold Case Vault files are AI-generated. Each case is reviewed by an automated multimodal evaluator for consistency, solvability, and content suitability before publication, and a sample is audited by our editorial team. All characters, names, locations, and events are fictitious — any resemblance to real persons, living or dead, or to actual events, is purely coincidental.
From other detectives
“It was like being inside a Sherlock Holmes story for an evening. We didn't put it down until 1am.”
“I bought one for my husband as a stocking filler. We did it together over Boxing Day. Best Christmas present I've given in years.”
“The level of period detail is genuinely impressive. The 1923 case felt like leafing through a real archive.”
Have a case idea? A stuck mystery? A commercial enquiry?
contact@murdermysterygameai.comMW Tech Solutions UG · Nuremberg, Germany
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