
A World War II computer. An archive of lost books. A world-changing secret. Narrative deduction meets audio drama, from the creators of Overboard!, Heaven's Vault and A Highland Song.
Modeled estimate, not a reported figure. How we estimate →
Discounts
Every price cut of more than 20% we have observed, in each market that quoted one, with this game's chart position on either side of it. These are episodes, not a model: a sale is one event, and one event cannot tell you what the next one will do.
Reviews, worldwide (the counter carries no country): 1.43/day in the week to Aug 10 → 3.71/day in the week after.
For scale, across Steam · Top Sellers · Brazil over the last 30 days: the 26 chart moves that followed a price cut of more than 20% went a median of 7 places towards #1, and the 2,400 moves with no price cut behind them went 2 away. One store, one chart, one country — it is the only place we have enough observations to say even that.
Prices outside the United States have been collected since 6 August 2026 and chart positions since 19 July 2026, so a cut older than that has no market to compare and a market that joined later has no history yet. Nothing here is converted between currencies.
About
A voice is saying your name. A WWII-era machine, long hidden in a church basement, whirs to life. Through a crackling speaker, a man asks you to find a stolen book. He only knows the title. Time is running out.
The machine, created by Bletchley Park engineers Cecil Caulderly and Beatrice Dooler, contains a vast archive of obscure books, letters, and journals fed in over the span of fifty years in an attempt to crack the code of reality. As their lives fell apart, the machine kept working.
Navigate the computer’s archive. Link its obscure texts and uncover its creators’ secrets. Communicate with the man behind the speaker to figure out your role in this mystery. Destroy the book at the core of the machine — before it’s too late.
Deduce links through the archive to locate hidden sources.
Unravel the stories and unearth the secrets of the books’ authors and the machine's creators.
Map the archive and find the book that will rewrite the world.
Talk with your handler at any time, creating a dynamic audio drama that responds as you explore.
Featuring the voices of Rebekah McLoughlin (The SCP Archives, Eternal Threads), Paul Warren (A Highland Song, Viewfinder, The Séance of Blake Manor) and Phillipe Bosher (Baldur's Gate 3, Doctor Who, The Hitchhiker’s Guide to the Galaxy).
Original soundtrack by Laurence Chapman (A Highland Song, Heaven's Vault, The Mask of the Rose).
TR-49 takes inspiration from narrative deduction games like The Roottrees are Dead, The Return of the Obra Dinn, Type Help and Her Story, and from audio dramas like The Magnus Archives and ars PARADOXICA.
Written and created by the award-winning team behind Heaven's Vault, Overboard!, and A Highland Song.
Engagement
Reviews
Themes across 158 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
A tight, thematic, and perfectly packaged 5-6 hour text puzzling experience (there is a graphical interface and a system that takes some notes for you, but most of the game mechanics are in reading and writing). Highly recommended for investigation game fans, especially fans of Type Help/Incident at Galley House. Some interface things I didn't figure out until embarrassingly late: - You can type codes on your keyboard, you don't have to click them. - A red dot or asterisk in your notes means there are links to that item that you haven't found. - There are a couple of spots that imply a time constraint -- this is just for flavor, you don't actually have to rush.
Short but interesting deduction game in the style of Her Story or Immortality. Navigating this book catalogue and discovering all the books and commands and passwords was surprisingly challenging, especially towards the end. It wasn't that hard to figure out what I was supposed to do and what are the "rules" but at some point you do feel like you are out of leads. At least I did. I really enjoyed reading everything and understanding the events that lead to where we were and what my end goal is, even if I did stumble on a few key moments or information by chance.
Media

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Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English**languages with full audio support
Hours played at review time, across 158 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
I enjoyed filling the pages, and trying to piece together what might have happened. However, it was kind of annoying how the guy constantly wanted to talk, especially as he usually didn't have anything important to say. Please let me do my puzzles in peace!
I found this game through Secret Sleepover Society, so thank you Yammers for introducing me to this intriguing mystery! I had a lot of fun looking for all the sources but didn't know about all the extra stuff until the end (try looking for authors like Tolkien or other famous 20th century authors). Overall a really cool hidden gem!
I finally had a chance to try this game, and in short, I found trying to play it infuriating. I had to mute the voice acting and turn off subtitles because the constant chattering of the characters continually interrupted my engagement and was driving me crazy. Additionally, I would try to enter a code to navigate to a specific entry, but before I could finish, it would jump to my partially entered code. I also found the general structure of the game too confusing; the entry is a book, but I'm reading a note written on the book, but it's not actually about sed book? Playing this game was not fun and rapidly making me more and more angry. I can't continue. I no longer wish to own this game.
Pretty fun mechanically. Storywise it is intricate, though very incohesive.
BibTeX: The Game. Gave me flashbacks from my thesis days. 10/10
I was hooked from start to finish
A very unique and mysterious game similar to the book "The Ship of Theseus".
A good mystery game with some faults. The story is great. I think some of the much later puzzles don't entirely make sense. Also, you're going to be bombarded with a lot of information and only able to pursue one path at a time. There isn't a search function to go through text that you've accessed before. That would have helped me when I came back to the game after a day and couldn't remember the start of a specific breadcrumb trail I left alone.
Players by region
Where this game's players are, estimated from review languages.
Players also reviewed
The games this title's players most often review too — audience affinity.
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