Screenshots
Watch trailer on Steam ↗TR-49
inkle Ltd · Published by inkle Ltd · Official site ↗
Very Positive — 94% positive (1,262 reviews) · Metacritic 82 · 21 achievements
Last updated 27 Sept 2026
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.
£5.89
Lowest price we've ever recorded
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Price history
Adventure · 2026 · More £5 - £15 games
Explore a world where a WWII computer conceals lost books and secrets. TR-49 challenges you to solve puzzles through in-depth dialogue choices, bringing the creators of Overboard! and Heaven's Vault to new heights of interactive storytelling.
About this game
Designed for Deck
Good news - Valve has officially Verified it for Steam Deck. And more than that, we designed it from the ground up to be fantastic on Deck - we love the platform!
About the Game
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.
System Requirements
Will my PC run this? →Minimum
- Requires a 64-bit processor and operating system
- OS: Windows 10
- Processor: Any
- Memory: 2 GB RAM
- Graphics: Any
- DirectX: Version 9.0c
- Storage: 200 MB available space
Recommended
- Requires a 64-bit processor and operating system
- OS: Windows 11
- Processor: Any
- Memory: 4 GB RAM
- DirectX: Version 9.0c
- Storage: 200 MB available space
Supported Languages
*languages with full audio support
Latest news
AnnouncementsOfficial
The CALIBRATION REVISION
Thanks to everyone who's been playing TR-49 so far! We've been busy collating feedback, tightening screws, replugging wires, so we can now bring you: The CALIBRATION revisionThe Settings menu (ESC key) now offers two new tick-boxes. 1) Reduce HintsFor those who like a more deductive, less-directed experience, you can remove the in-game hint systems and reminders. Once you're through the tutorial, it'll also remove the highlight state from the intercom, to reduce the pressure to use it (unless you feel like talking).2) Remove Glitch EffectsEveryone loves old tech, but it's not always comfortable. If the screen movement was giving you issues, tick this box to reduce the ambient animation for a more crisp on-screen reading experience. We hope this lets you enjoy TR-49 the way you want to.Read full article on Community Announcements (inkle)Patch NotesOfficial
Hotfix 1.0.8
One big fix: - prevent one of the bad endings from locking players out of the better endings Other minor fixes: - reinstate a missing dialogue line - a few typosRead full article on Community Announcements (inkle)Patch NotesOfficial
Hotfix 1.0.7
We're blown away by the reception to the game. If you've played, please take a moment to leave us a review, as they really help give small releases visibility. But onto the main info: Hotfix 1.0.7 includes: a fix for a \ birthdatealternative renderer if the machine screen stays black (enabled by adding --rendering-driver opengl3 to the launch options for the gameNote we've seen some people whose machine screens simply aren't there - it seems that updating graphics drivers fixes that issue, and you won't need the alternative renderer in this buildRead full article on Community Announcements (inkle)Patch NotesOfficial
1.0.6 - Minor Hotfix
This is a minor update only. Slightly less corruption towards the end-game for players who are resorting to brute-force. Move static SFX to the SFX volume slider, and reduce walkie talkie crackle volume. Fix for un-closeable popups.Read full article on Community Announcements (inkle)AnnouncementsOfficial
Bletchley Park origins
I don't actually know that my late great-uncle worked at Bletchley. But the available evidence suggests he did. Here's what I do know. I inherited a few things when he died - not in his will, but just collected from his attic. One of these is significant, and linked.There was a card table (I used it for a computer keyboard); several decks of cards (useless, all missing a single card); a set of bridge score pads (bridge is an incredible game); and a heavy metal box. Really heavy: we moved it from Manchester to Scotland when the family relocated, it took two of us to lift. (Not two removal men, obviously. those guys can lift washing machines.) The box sat in my bedroom when I was a teenager; I put a lamp on top it. The lock is unlike anything I've seen elsewhere: one catch with two letter dials, one catch with two numbers, and they both have to be right to open.I think my uncle must have BUILT the box himself (he was an engineer.) He didn't leave the code written down anywhere. Well, I thought he didn't. He did, in fact, but I didn't find it for several years. I did SEE it, however. And I saw it -- at Bletchley Park.The reason I was at Bletchley was unusual. I was there working on a movie - The Imitation Game, which stars Benedict Cumberbatch as Turing. He had, apparently, requested a mathematician to talk to, to help him play the character better -- and they wanted some mathematics for a notebook.They hired me. (I was very cheap, and knew someone on the production staff.) There's a shot of a notebook in the movie -- I can't find a still of it now, but it's there, and it's in my handwriting (my very best handwriting, which is almost legible). Benedict, incidentally, is really nice. I also met Kiera Knightley, but she was understandably polite but reserved around strange mathematicians.Anyway, that was the first time I'd been to Bletchey, ever. There's quite a fancy museum there now, but then it was just mouldering huts. The Bombe (or a replica? I'm actually not sure) ...Read full article on Community Announcements (inkle)
