In short

The best cold case game for most players is Unsolved Case Files: Harmony Ashcroft, a paper file with more than 50 documents and three objectives checked on an online answer page. Choose Cryptic Killers: Murder of a Millionaire for an added online police inbox, or Unsolved Case Files Quick Play when you only have about an hour.

Cold case game — A boxed or enveloped set of reproduced police documents, photos and statements about an invented unsolved murder, which players read and compare to identify the culprit, usually checking each answer online.

We earn a commission when you buy through links on this page, at no extra cost to you. Commissions never decide which games we pick or their order. As an Amazon Associate I earn from qualifying purchases. Affiliate disclosure

At a glance

GamePlayersPlaying timeAgeDifficultyFormat
Unsolved Case Files: Harmony AshcroftSolo or group—14+—Cold case file, 50+ documents, 3 objectives
Cryptic Killers: Murder of a MillionaireSolo or groupAbout 2 hours—3.5/5 (publisher rating)Case file, 29 pieces of evidence + online inbox
Unsolved Case Files Quick Play: Who Murdered Luna Knight?Solo or groupAbout 1 hour——Quick cold case file, 29 documents
ThinkFun Cold Case: A Pinch of Murder1+ (solo or small group)60–120 min14+—Cold case box, 31 pieces of evidence
Finders Seekers: Chicago Mob Cold Case1–8+1–2 hours14+—Puzzle-based case, escape room style
Trench and Trilby: Murder at Maple Manor1–12———Cold case file, 30+ pieces of evidence + online evidence

Our picks

Best overall

Unsolved Case Files: Harmony Ashcroft

The case that made the series known: more than 50 documents and photos about a 1998 murder, solved in three steps, each checked on an online answer page that offers hints before it reveals anything. It suits solo players, couples and small groups aged 14 and up.

Best with a digital layer

Cryptic Killers: Murder of a Millionaire

Twenty-nine pieces of physical evidence plus an online police inbox you must get into to check alibis. The publisher rates it 3.5 out of 5 for difficulty and about two hours of play. Players who want a pure paper experience may find the online step a distraction.

Best short case

Unsolved Case Files Quick Play: Who Murdered Luna Knight?

Just under 30 documents and a case designed to take about an hour, which makes it the right first cold case for anyone unsure they will enjoy the format. Experienced players will finish it quickly.

Best first full case

ThinkFun Cold Case: A Pinch of Murder

A 1983 case with 31 pieces of evidence, played solo or by a small group in 60 to 120 minutes. Wrong answers on ThinkFun's site point you back toward the right evidence, which helps beginners without spoiling the ending.

Best for puzzle fans

Finders Seekers: Chicago Mob Cold Case

Closer to an escape room than a pure file: you decode ciphers and solve riddles as well as read clues. Listed for 1 to 8 or more players aged 14 and up, over one to two hours. Purists who want only statements and timelines should look elsewhere.

Best for a big table

Trench and Trilby: Murder at Maple Manor

More than 30 pieces of evidence plus online evidence, and a listed range of 1 to 12 players, so a dinner group can split the documents and debate suspects together. Larger groups will need time to pass papers around.

What makes a cold case game different

A cold case game drops you into an investigation that went nowhere years ago. Instead of a board, you get a folder: police reports, witness statements, newspaper clippings, maps, phone records and photos of an invented crime. Your job is the one a cold case detective would have: reread everything with fresh eyes and find what the original investigators missed.

The appeal is the paperwork itself. The documents are written to contradict each other in small ways, and the solution hides in those contradictions: a time that does not match a receipt, a statement that changes between two interviews, a name that appears where it should not. There are no turns and no dice, so the game moves at the pace of your reading.

If your group prefers a board, cards or competition, the best murder mystery board games ranking covers those formats instead.

What is inside a typical file

Publishers list their contents on the box, and the lists are remarkably similar across brands. Expect a cover letter that sets out your assignment, then a mix of the following:

  • Police paperwork: incident reports, evidence logs, interview transcripts and, in most files, a coroner’s report written in factual language.
  • Witness and suspect material: statements, personal letters, diaries, text message printouts and phone records.
  • Context documents: newspaper articles, maps of the area, floor plans, receipts and travel times.
  • Photos: photographs of locations, people and objects, reproduced on photo paper or card.

Unsolved Case Files lists more than 50 documents and photos in the Harmony Ashcroft case, Cryptic Killers 29 pieces of physical evidence in Murder of a Millionaire, and ThinkFun 31 in A Pinch of Murder. A higher count usually means a longer evening rather than a harder puzzle.

How answers are checked

Almost every cold case game now uses a website to confirm your progress, and the way it does so shapes the evening.

  • Staged objectives. Unsolved Case Files splits each case into three objectives, for example proving that the convicted man is innocent before identifying the real culprit. According to the publisher’s help pages, the answer key offers up to three hints after a wrong answer, so you can keep going without seeing the solution.
  • Pointers on wrong answers. ThinkFun’s Cold Case site tells you where to look again when a submitted solution is wrong, then unlocks a confession once you are right.
  • Online evidence. Cryptic Killers and Trench and Trilby put part of the evidence online: a police inbox or digital files that you unlock with information found in the box. The online step is part of the puzzle, not just a check.

Groups that dislike screens at the table should favor the first two systems. Groups that enjoy a twist will like the third.

How to pick between them

  • Your first case: Unsolved Case Files Quick Play or ThinkFun’s A Pinch of Murder. Both are short enough to finish in one evening, and both help you when you go wrong.
  • A full evening for two to four: Unsolved Case Files: Harmony Ashcroft. The three objectives give the night a clear structure and natural breaks.
  • Players who like a challenge: Cryptic Killers: Murder of a Millionaire, rated 3.5 out of 5 by its publisher, with the extra online layer.
  • Puzzle lovers: Finders Seekers: Chicago Mob Cold Case, which adds ciphers and riddles to the reading.
  • A dinner group: Trench and Trilby: Murder at Maple Manor, listed for up to 12 players, so the documents can be shared out.

Still unsure which box suits you? Our guide on how to choose a murder mystery box compares one-off boxes, series and subscriptions.

Setting up the table

Cold case games reward a little preparation.

  1. Clear a large surface. You will want to lay documents side by side. A dining table works better than a coffee table.
  2. Keep a timeline sheet. Write every time and date you find on one page. Most cases are cracked on the timeline.
  3. Sort before you read. Make piles for statements, official reports and personal items. It stops the same document being read three times.
  4. Decide how you will use hints. Agree before starting whether you will open a hint after 20 minutes stuck, so frustration does not end the evening.

For a full method, including how to test a theory without spoiling the ending, read our guide on how to solve a murder mystery.

Difficulty and time, case by case

  • Unsolved Case Files Quick Play: Luna Knight is the gentlest start, with fewer documents and a target of about an hour.
  • ThinkFun Cold Case: A Pinch of Murder sits in the middle, at 60 to 120 minutes, with guidance after each wrong answer.
  • Unsolved Case Files: Harmony Ashcroft is a full evening. The three objectives break it into stages, so a group can stop after the first and resume later.
  • Finders Seekers: Chicago Mob trades some reading for puzzles; the publisher lists one to two hours.
  • Cryptic Killers: Murder of a Millionaire is the most demanding here, rated 3.5 out of 5 by its publisher, with about two hours of play and an online step to crack.
  • Trench and Trilby: Murder at Maple Manor depends on the size of the table: more players means more discussion and a longer evening.

Common mistakes on a first case

  • Chasing the culprit too early. Most files ask a narrower question first, such as proving one person could not have done it. Answer the question asked.
  • Trusting the original investigation. The case went cold for a reason. Treat official conclusions as claims to test, not facts.
  • Reading alone in silence. Say out loud what each document proves. Contradictions surface when two people describe the same moment differently.
  • Opening the answer page too soon. A wrong answer often costs nothing but a hint, yet guessing repeatedly removes the satisfaction of the final solve.

What these games ask of players

Cold case games are reading games. Expect dozens of pages, some handwritten, and long stretches of quiet comparison. Most publishers rate their cases for ages 14 and up, largely because of that reading load, and younger players may find the volume of text tiring.

The subject is an invented murder, and the files include police and coroner’s reports because that is what a real case file contains. The games on this list keep the focus on facts, alibis and contradictions. When we found a listing that made graphic material its selling point, we left it out.

One case, then a series

Cold case games are played once, but publishers release many cases, so a good first experience usually leads to a second box. Unsolved Case Files and Cryptic Killers each sell a range of standalone cases at different difficulty levels, which makes it easy to step up after a first success. Solved files keep their value if you treat them like borrowed books. Avoid writing on the documents, take notes on a separate pad and put every piece back in its folder at the end. A complete file can then go to friends or another household, and it gives them exactly the experience you had. It also helps to keep a short log of the cases you have solved, with the date, the time it took and who played, so you can pick the next difficulty level with confidence. If you finish a case and want the same feeling with more table talk and competition, a murder mystery board game is the next stop. For everything else in this topic, from party kits to first-timer guides, see the murder mystery games hub.

Key facts

How we selected these games

We started from cold case games sold on Amazon.com and in stock on October 25, 2026, and kept only paper case files that you solve by reading evidence, leaving board and card games to our separate murder mystery board game ranking. Each pick had to describe its contents (number of documents or pieces of evidence) and how answers are checked, and we compared those claims with publishers' pages and published reviews. We excluded puzzle books, word searches and files built around graphic autopsy material. Only one case per series made the list, except where two cases from the same publisher answer clearly different needs, such as a full case and a one-hour case. We have not played every case on this page: the descriptions come from publishers' information, help pages and published reviews. Affiliate commissions do not decide which games appear or their order.

FAQ

How long does a cold case game take?

Most full cases take two to three hours, sometimes spread over two evenings. Publishers estimate about two hours for Cryptic Killers: Murder of a Millionaire and 60 to 120 minutes for ThinkFun's A Pinch of Murder, while Unsolved Case Files Quick Play cases are designed for about an hour.

Can you play a cold case game alone?

Yes. Every game on this list can be played solo, because the challenge is reading and comparing documents rather than taking turns. Many players prefer two or three people, so one can track the timeline while others read statements.

Do you need the internet to play a cold case game?

Usually yes, at least to check answers. Unsolved Case Files and ThinkFun use online answer pages, and Cryptic Killers adds an online police inbox that is part of the evidence. Keep a phone or laptop nearby but out of the way until you are ready to test a theory.

Can you replay a cold case game?

Not really, because the solution stays the same once you know it. The files can be passed on to friends if nobody has written on them, and most publishers sell several separate cases, so you can move on to a new file.

Sources

Keep investigating