STEAMYDATA

Opus Magnum — patch notes and updates

Stored observation / content update:

Dated developer announcements recorded from Steam. Open the source for the complete update.

UpdateDateExcerpt / source
Volume CVIII, Issue VII: Foodways2026-05-12Today'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 alchemical development to drastically change life, certain mundanities persist. One such example is food consumption: the fact that sustenance must still be ingested to animate worker and noble alike is a curious holdover in this advanced age. Since the problem has not yet been satisfactorily solved, incremental improvements to the production and quality of various foodstuffs must for now suffice.
Volume CVIII, Issue VI: From Obscurity to Renown2026-05-06Today'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 though alchemy itself is a science, alchemical careers are anything but. Sometimes brilliant alchemical engineers toil for many years in little-known workshops, making important but unsung contributions, before one particular discovery finally attracts widespread attention. In this issue, we are proud to present a compilation of innovations that marked turning points in their creators’ fortunes.
Volume CVIII, Issue V: Decorative Arts2026-04-28Today'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 familiar with the great many artists and designers who labor over the interiors of Great Houses, ensuring nothing falls behind their competitors in opulence and luxury. What may be lesser known is how often alchemical engineers are found at the centre of this work, contributing novel materials that help ensure every tapestry, every wall sconce, and every spoon shines brighter than ever before.
Volume CVIII, Issue IV: Ballistic Alchemy2026-04-21Today'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 field of alchemical ballistics finds lonely champions every few decades, the overwhelming consensus remains that devices for impelling small projectiles at great speed are all but useless except in very rare situations. The following contributions should allow any alchemical practitioner still convinced of their potential utility to satisfy their curiosity and reach the same conclusion.
Volume CVIII, Issue III: Alchemy for the Home2026-04-14Today'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 leaves no lives untouched, even those of commoners. Over the last few hundred years, large communal dwellings have given way to small, separated households that afford a measure of comfort and privacy. Though the innovations catalogued here may seem insignificant to alchemical engineers used to more outwardly visible applications, rest assured they have played a major role in the advancement of domestic life.
Volume CVIII, Issue II: A New Era of Mining and Metallurgy2026-04-07Today'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 Metallurgy The introduction of Reductive Metallurgy fundamentally changed the way metallic value was measured. This had many subsequent effects in the field of mining, which was previously regarded as a mature, even stagnant field. The reevaluation of long-existing mining and prospecting techniques ushered in a new wave of efficiencies and innovations, in the process making and unmaking vast fortunes.
Volume CVIII, Issue I: Advancements in Nautical Alchemy2026-03-31Today'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 Volume CVIII, Issue I: Advancements in Nautical Alchemy The surge of interest in seafaring has anything but slowed in recent times. Passion for exploration has given way to excitement over prospects for maritime trade. With this in mind, the Houses have engaged in a quiet arms race as they prepare to vie for dominance over the vast seas. This has resulted in rapid advancements in seafaring technology from many
UPDATE: Polish translation, ExternalLeaderboardURLs fix2026-03-30Opus 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 a fix for ExternalLeaderboardURLs not properly uploading GIFs, whatever that means. It's kind of an IYKYK situation.
UPDATE: Fix for Intel integrated GPUs2026-03-24Today'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 bad news for anyone still running a 32-bit version of Windows. (Although, if this does apply to you, you should still be able to switch to the "previous" branch on Steam.)
UPDATE: Small fixes2026-03-22Today'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.
De Re Metallica launch update!2026-03-17Today'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 playback)three new issues of the Journal of Alchemical Engineeringfixes for a bunch of bugs that should have been fixed years agoOpus Magnum is back!
A new campaign for Opus Magnum awaits!2026-02-19A 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!
UPDATE: Small bug fix2024-02-01Today'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.
UPDATE: Small bug fixes2024-01-15Today'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 where pivoting the same atom in two different directions with two different grabbers was somehow not considered an error. I'm shocked we didn't fix this sooner!
Last Call BBS - The last game by Zachtronics!2022-07-05Boot 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 all fully cracked and ready to enjoy! Includes eight full games: 20th Century Food Court: Design factories to produce food just like they did over 700 years ago in the 20th century. Keep your costs low and your machines running fast! STEED FORCE Hobby Studio: Assemble robot models based on the anime smash hit Steed Force right on your computer. No sandpaper required! X’BPGH: The Forbidden Path: Enter a cur
UPDATE: Validation fixes2022-01-17Today's update fixes some obscure validation issues that could be exploited to prevent collisions.
UPDATE: Czech translation2021-08-28Today'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 (zach@zachtronics.com) and we'll get to the bottom of it.
UPDATE: Portuguese translation2021-07-01Today'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 (zach@zachtronics.com) and we'll get to the bottom of it.
UPDATE: Validation fixes2021-06-12Today'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.
UPDATE: Korean translation fixes2021-05-17Today's update includes some small fixes to the Korean translation.