Steam app 558990 · updated 12 Sep 2026, 18:06 UTC
Opus Magnum is the latest open-ended puzzle game from Zachtronics, the creators of SpaceChem, Infinifactory, and SHENZHEN I/O. Design and build machines that assemble potions, poisons, and more using the alchemical engineer’s most advanced tool: the transmutation engine!
720 hourly samples, with the daily peak drawn over them. Weekends are shaded.
108 months, October 2017 to September 2026. The highest number of people in the game at once, each month, on a time axis -- a gap in the record stays a gap.
The highest number of people in the game at once, each month. Four, because four is as far back as the source keeps anything finer than one figure a month.
31 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.
31 days as the curve, each the highest figure that day. Behind it, 438 hourly samples from 13 Aug, which is as far back as the source keeps every hour. Weekends are shaded.
12 days as the curve, each the highest figure that day. Behind it, 282 hourly samples. Each dip is a night. Weekends are shaded.
Opus Magnum was released on 7 Dec, 2017.
| Language | Full audio |
|---|---|
| English | |
| French | |
| German | |
| Japanese | |
| Russian | |
| Simplified Chinese | |
| Spanish - Latin America | |
| Korean | |
| Turkish | |
| Ukrainian | |
| Portuguese - Portugal | |
| Czech | |
| Polish |
A blank audio cell means full audio was not marked in the returned language list.
6 achievements in total.
50 developer announcements, Mar 2018 to Jul 2026 · times in UTC
This update fixes a few small bugs: Fixed a bug in today's earlier update where the folder picker dialog on Windows was stuck behind the game window (I have three monitors and did not notice, sorry not sorry). Fixed a bug where the…
Patch notesToday's update adds an in-game option for setting the GIF output directory. Clicking the "SET" button should open an OS-level folder picker dialog, which seems like exactly the kind of thing that won't work for many people, especially if…
Patch notesToday's update adds a Russian translation for the Journal of Alchemical Engineering, contributed by TrottingHeart from the unofficial Zachtronics Discord.
Patch notesToday's update actually contains a Korean translation of the De Re Metallica DLC, unlike last week's update that only translated the puzzle names and the Journal of Alchemical Engineering. Thanks again to Haxton from the unofficial…
Patch notesToday's update adds a Korean translation for the De Re Metallica DLC campaign and the Journal of Alchemical Engineering, contributed by Haxton from the unofficial Zachtronics Discord. It also contains the following fixes: Changed the GIF…
Patch notesToday's update includes the following changes: Puzzles in the journal now have a variety of music instead of a single song. Fixed a crash when loading a solution that referenced an input or output that was deleted from a custom puzzle.…
Patch notesToday's update adds a few small quality-of-life fixes: You can now click on the journal issue name to open a menu that lets you quickly select a different journal issue. The current journal issue is now persisted in your save file, so that…
Patch notesToday's update adds the final issue of the Journal of Alchemical Engineering, at least for now. It also adds a new achievement, The Way of the Philosopher, for players who solve at least one puzzle in each of the 24 journal issues. Thank…
krispykremToday's update adds a new issue to the Journal of Alchemical Engineering. Volume CVIII, Issue XI: Small-Scale Construction Crafts While research to support the large-scale building projects initiated by the Great Houses has shown a tendency…
Patch notesToday's update adds Portuguese and Russian fan translations for the De Re Metallica DLC. Many thanks to Yuri Nikolai and TrottingHeart respectively!
Patch notesToday's update upgrades the game to a newer version of the Steam API, which should fix a crash on Mac when attempting to browse to Steam Workshop from in-game.
Patch notesToday's update adds a new issue to the Journal of Alchemical Engineering. Do you have a puzzle you'd like to see included in a future issue? Submit it here: https://tally.so/r/KYDzWX Volume CVIII, Issue X: Inside the Soria Glassworks Though…
Patch notesToday's update adds an additional salt input to the Shimmering Chain journal puzzle.
Patch notesToday's update adds a new issue to the Journal of Alchemical Engineering. Do you have a puzzle you'd like to see included in a future issue? Submit it here: https://tally.so/r/KYDzWX Volume CVIII, Issue IX: Frontiers of the Infinite For…
Patch notesToday's update adds a new issue to the Journal of Alchemical Engineering. Do you have a puzzle you'd like to see included in a future issue? Submit it here: https://tally.so/r/KYDzWX Volume CVIII, Issue VIII: Apothecary Roots Alchemists…
Patch notesToday's update adds a new issue to the Journal of Alchemical Engineering. Do you have a puzzle you'd like to see included in a future issue? Submit it here: https://tally.so/r/KYDzWX Volume CVIII, Issue VII: Foodways Despite the promise of…
Patch notesToday's update adds a new issue to the Journal of Alchemical Engineering. Do you have a puzzle you'd like to see included in a future issue? Submit it here: https://tally.so/r/KYDzWX Volume CVIII, Issue VI: From Obscurity to Renown Even…
Patch notesToday's update adds a new issue to the Journal of Alchemical Engineering. Do you have a puzzle you'd like to see included in a future issue? Submit it here: https://tally.so/r/KYDzWX Volume CVIII, Issue V: Decorative Arts Readers will be…
Patch notesToday's update adds a new issue to the Journal of Alchemical Engineering. Do you have a puzzle you'd like to see included in a future issue? Submit it here: https://tally.so/r/KYDzWX Volume CVIII, Issue IV: Ballistic Alchemy Though the…
Patch notesToday's update adds a new issue to the Journal of Alchemical Engineering. Do you have a puzzle you'd like to see included in a future issue? Submit it here: https://tally.so/r/KYDzWX Volume CVIII, Issue III: Alchemy for the Home Progress…
Patch notesToday's update adds a new issue to the Journal of Alchemical Engineering. Do you have a puzzle you'd like to see included in a future issue? Submit it here: https://tally.so/r/KYDzWX Volume CVIII, Issue II: A New Era of Mining and…
Patch notesToday's update adds a new issue to the Journal of Alchemical Engineering, hopefully one of many to follow in the coming months! Do you have a puzzle you'd like to see included in a future issue? Submit it here: https://tally.so/r/KYDzWX…
Patch notesOpus Magnum jest teraz dostępne po polsku!Opus Magnum is now available in Polish!Thanks to Michał "Doczek" Dokrzewski for providing a Polish fan-translation, which also includes the DLC and is now available in-game!This update also includes…
Patch notesToday's update fixes the crash with Intel integrated GPUs by upgrading the game from a 32-bit to a 64-bit binary. This is good news for anyone with an Intel integrated GPU, as you should no longer need to force OpenGL usage on Windows, but…
Patch notesToday's update increases the number of outputs required for the "Reclaimed Gold" journal puzzle and fixes a bug where main campaign documents would display incorrectly when the language was set to Korean.
Patch notesToday's update adds support for the brand new De Re Metallica DLC, available here:It also adds a bunch of non-DLC features, like: a new halt instruction (for stopping arms)a semi-secret fast-forward button (hold Alt while starting…
krispykremA new campaign for the award-winning Opus Magnum awaits! New puzzles! New glyphs! New story! Opus Magnum: De Re Metallica will be available on Steam March 17th. Wishlist it now!
krispykremToday's update fixes a small bug where an experimental third-party leaderboard upload icon was shown even when you weren't uploading to an experimental third-party leaderboard.
Patch notesToday's update fixes a bug where the cursor was misaligned in fullscreen mode on notched MacBooks, although the issue seems to persist when the game is running in a window. I'm still looking into that part. This update also fixes a bug…
Patch notesBoot up your Z5 Powerlance and dial into Last Call BBS, the last game from Zachtronics! The Barkeep’s loaded up his retro computer with a full set of puzzle games for you to download and play. No need to worry about copy protection, they’re…
krispykremToday's update fixes some obscure validation issues that could be exploited to prevent collisions.
Patch notesToday's update adds a Czech fan translation by someone named Mike. Thanks for your hard work! If you have any feedback about the translation (or anything else, really) you can send me an email ([email protected]) and we'll get to the…
Patch notesToday's update adds a Portuguese fan translation by Yuri Nikolai Martinez Laskowski. Thanks for your hard work! If you have any feedback about the translation (or anything else, really) you can send me an email ([email protected]) and…
Patch notesToday's update includes some minor fixes to solution validation logic. Unless you're hanging out on the unofficial Zachtronics Discord server and know what to look for you shouldn't see anything different in the game.
Patch notesToday's update includes some small fixes to the Korean translation.
Patch notesOpus Magnum тепер доступна українською! Opus Magnum is now available in Ukrainian! Thanks to RDSk, with help from Ceádmil, soitin, and the Ukrainian localizations Discord server.
Patch notesOpus Magnum artık Türkçe! Opus Magnum is now available in Turkish! Today's update adds a Turkish fan translation by Volkan Gezer. Thanks for your hard work! If you have any feedback about the translation (or anything else, really) you can…
Patch notesToday's update adds two power-user features, which are mostly hidden for now: 1. Pressing F10 while editing a solution will reload it from disk. This will only be useful to players who are using an external program to edit their solutions…
Patch notesToday's update adds a Korean fan translation by Kan_Pungki. Thanks for your hard work! If you have any feedback about the translation (or anything else, really) you can send me an email ([email protected]) and we'll get to the bottom of…
Patch notesToday's update adds a hidden setting that causes alt-click to be interpreted as a right-click. It is off by default.
Patch notesToday's update adds an experimental numpad-based keyboard layout for players who use their left hand to hold their mouse.
Patch notes¡Opus Magnum ya está disponible en español! Por favor envíeme un correo electrónico ([email protected]) si tiene algún comentario o ve algún error.
Patch notesToday's update improves some error messages for when the game crashes.
krispykremToday's update contains a small change to the custom puzzle file format. Nothing to see here, move along...
Patch notesToday's update contains a small change to the custom puzzle file format. Nothing to see here, move along...
krispykremToday's update adds a third (and presumably final) user-created journal issue that includes two production puzzles. Thanks to everyone who helped out putting these together!
krispykremToday's update adds a third (and presumably final) user-created journal issue that includes two production puzzles. Thanks to everyone who helped out putting these together!
krispykremToday's update adds another user-compiled journal issue with five new puzzles designed to challenge your optimization skills.
krispykremToday's update adds another user-compiled journal issue with five new puzzles designed to challenge your optimization skills.
Patch notesToday's update adds a new journal issue that was assembled with help from the unofficial Zachtronics Discord server. Thanks everyone! It also includes a small change to add scores to GIF filenames, and a small fix for a bug where histograms…
krispykremEverything Steam lists as add-on content for this game, newest first. Prices are left out on purpose: the store answers this page in one currency and it is not the reader's.
| Name | Platforms | Released |
|---|---|---|
| Opus Magnum: De Re Metallica | WindowsmacOSLinux | 17 Mar 2026 |
What Steam runs, and with what. Straight from the app configuration.
| Description | Executable | Arguments | Platform | |
|---|---|---|---|---|
| Launch | Lightning.exe | windows | ||
| Launch | Opus Magnum.app/Contents/MacOS/Lightning | macos | ||
| Launch | Lightning | linux |
The folders Steam Cloud syncs. The root is a token Steam uses for a location on your own machine, not a path this page can know.
| Root | Folder | Files |
|---|---|---|
gameinstall | {64BitSteamID} | save.dat |
gameinstall | {64BitSteamID} | *.solution |
gameinstall | {64BitSteamID}/custom | *.puzzle |
It runs on public data and somebody's spare time.
https://paypal.me/KintaroPalPay[email protected]0x4d559C765AA8BFe336E36d5b76024926767eD38dTJtctWU9uetJaTBoSybd1RErW7n9duTKVG