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▲ 5.4%vs 24h ago · updates every minute
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97% positive of 6,100 · Overwhelmingly Positive · Live from Steam
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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!
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Review score: 97% on 2026-11-01 → 97% today (6,100 reviews)
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Works, but may need extra effort. Results from Valve's own testing.
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Every build released on Steam for this game since we started tracking it, with the developer's patch notes. Updated within minutes of each new build.
Community-made version with advanced features
Old version of Mono for macOS 10.15
This update adds a new achievement for the De Re Metallica DLC, "The Way of the Metallurgist", that is unlocked when completing its campaign.
Today's update adds the following: a Polish translation for the Journal of Alchemical Engineering (thanks Doczek!), some fixes for obscure bugs when editing custom puzzles that you've already solved, and a hidden config setting, AlwaysReplaceLeaderboardScores,…
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 solitaire music would contin…
Today'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 esote…
Today's update adds a Russian translation for the Journal of Alchemical Engineering, contributed by TrottingHeart from the unofficial Zachtronics Discord.
Today'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…
Today'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 you to everyone who su…