- Indie
- Simulation
Game
Opus Magnum
Master the intricate, physical machinery of the transmutation engine— the alchemical engineer’s most advanced tool— and use it to create vital remedies, precious gemstones, deadly weapons, and more. Design Machines - Design and build machines that carry out alchemical processes using a variety of components. Open-Ended Puzzles - Compete against your friends and the world to build the simplest, fastest, and most compact solutions. Export animated GIFs to show them off. Steam Workshop - Make and share your own puzzles with full Steam Workshop integration and an easy-to-use puzzle editor. Solita
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!
About Opus Magnum
- Released
- December 2017
- Developer
- Zachtronics
- Platforms
- Linux · PC (Microsoft Windows) · Mac · Xbox One
Where to get it
Release, studio and platform data from IGDB. Store links go to the sellers, not to us. We do not sell games and we do not host files.
Browse everything
Sorted, filterable and paged. Every link goes to the author’s own download.
From the developers
Official announcements, newest first. Posted on Steam.
- Community AnnouncementsUPDATE: Small bug fixesThis 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 solitaire music would continue playing when exiting Sigmar's Garden II in the journal. Fixed a bug in the custom puzzle editor UI where the blackout overlay was offs...
- Community AnnouncementsUPDATE: In-game option for setting the GIF output directoryToday'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 you're on a more esoteric operating system. If you run into any trouble, email me at [email protected] and we can investigate!
- Community AnnouncementsUPDATE: Russian journal translationToday's update adds a Russian translation for the Journal of Alchemical Engineering, contributed by TrottingHeart from the unofficial Zachtronics Discord.
- Community AnnouncementsUPDATE: Korean DLC translationToday'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 Zachtronics Discord for this contribution.
- Community AnnouncementsUPDATE: Korean DLC and journal translationToday'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 frame to localize the names of metrics, since it already localized the names of puzzles. Fixed a bug where the guilder sign (G) was replaced with a dollar sign...
- Community AnnouncementsUPDATE: Minor improvementsToday'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. Fixed an issue where the new achievement would only show a progress update when you solved a puzzle in a journal issue that you had previously not solved a puzzl...
- Mods indexed
- 638
- Versions
- 0
- Newest tracked
- none yet
- Most disruptive update
- No breakage data for this game
of 6.7k on Steam Workshop
Most downloaded
Measured from the source's own counts, summed across every release.
- HUMAN DNA TO LOL PLAYER DNA6.6k downloads
- CORRECTING CHIRALITY"I never should have trusted my inept student to be able to make even a simple product. I asked him to make a health tonic and he made it backwards! Now I'm stuck fixing his mistake."6.1k downloads
- ELECTRUM SEPARATIONNo glyph of bonding. A simple example of a puzzle that requires two arms.4.8k downloads
- RUST TO SILVERED MIRRORCan you turn an old rusted piece of iron into a beautifully pollished silver mirror? My Cost: 185G My Cycles: 133 My Area: 128 Too hard? SPOILER Here's my solution:2.9k downloads
- SNOWFLAKE CRYSTAL MK2......I might have gone too far with this2.6k downloads
- EXPLOSIVE GEL2.6k downloads
- FOOL'S GOLD2.5k downloads
- INTERNAL RESTRUCTURING 1There was some damage to our equipment, and the general equipment is being prioritised to other sectors. We have an excess of Duplications, so I guess you can use those right? Since you are new, here's a starting project. It is easy, swap the two elements in place. We know it'd be easier with Bon...1.9k downloads
- INFORMATION AGEMake a very long chain of various metals. The basic materials are the classic ones, but the problem is to know exactly which kind of metal to put where. This information is encoded inside another very long reagent, of the same length. The number of Air atoms over each Salt atom is equal to the nu...1.8k downloads
- SPARKLERThe paper is faded and crumbling, but still largely legible: You are cordially invited to celebrate the union of Armand of House Van Tassen and Pacificia of House Volmir, this Quintidi, the fourth of Nivose. A nine-course banquet will be provided after the ceremony, followed by a spectacular fire...1.6k downloads
- ENCASEDWith no way to unbond the atoms, turning lead into gold isn't always an easy parlor trick.1.3k downloads
- 18K GOLD REFINEMENTYou're given 18 karat yellow gold, and your task is to separate the copper and gold into their pure form.1.3k downloads
- WASTEFUL CALCIFICATION (Production)This curious production cabinet was found in the dorms of the university, amongst the previous posessions of a (now expelled) student. The cabinet itself, while functioning correctly, only turns expensive, rare quintessence into common, elemental salt. Initially, university officials had no clue...1.2k downloads
- IT'S JUST SOME AIR1.2k downloads
- LUMP REFINEMENT1.2k downloads
- LEAD BAR REFINEMENTYour shipment of lead dust seems to have been mixed up with a lead bar shipment. But the mix up won't stop an experienced alchemist such as yourself from turning it into gold, right?990 downloads
- Think SimpleLots of stuff to play with, although... most of it is useless, right?955 downloads
- BUTTERFLYButterfly is beautiful. Can you make your solution also beautiful?884 downloads
- TRINITY846 downloads
- Hourglass (Production)Just a cute little puzzle.803 downloads
- Chapter One Unification ChallengeEvery single input and output from Chapter One is represented here. The main challenge in this puzzle lies in finding ways to take advantage of mixing the various inputs and outputs, rather than simply solving each puzzle individually. Optimization is key!785 downloads
- ELEMENTAL CRYSTALSSeems simple enough? well, the challenge is simple: we need 4 pure elemental crystals out of one machine, but we only have limited ressources. well, at least we have quicksilver, or else this could be kind of hard to do. let's see how fast you can spit out those crystals, you got all tools at you...698 downloads
- GENETIC REPAIRReagents: Damaged Gene Products: Healthy Gene Recent studies in the emerging field of Biology have uncovered what they beleive to be the method by which living beings direct their own growth and characteristics. This discovery had been dubbed the Developmental Natural Almanac, or D-N-A for shorth...691 downloads
- TRIFUSION673 downloads
Browse all 638 Opus Magnum mods Sortable by downloads, rating and date.
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Why Opus Magnum mods break
A mod is compiled against one version of a game. When the game updates, anything that reached into the parts that moved stops working, and it usually stops working silently rather than with a message that explains itself.
That is what the table above counts. It is not a guess: each row is a mod the community has reported as broken by that specific release. The number is a fair measure of how disruptive an update was, and it is the reason people delay updating a game they have modded heavily.
Common questions
Does IndexGG host Opus Magnum mods?
No, and it never will. Every download link points at the author's own page on Nexus, GitHub, CurseForge or wherever they published it. We index the ecosystem; the files stay with the people who made them.
Where does the compatibility data come from?
From the communities that maintain it in the open, not from guesswork. Each claim carries how it is known, so a reported breakage is never presented as though the author said it.
Why is a mod listed as broken when it works for me?
Compatibility depends on your exact game version and the rest of your load order. A mod marked as broken in one release may work fine on an older one, which is exactly why the version is recorded next to the claim rather than a bare yes or no.