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!
Recent Reviews:
Overwhelmingly Positive (434) - 99% of the 434 user reviews in the last 30 days are positive.
All Reviews:
Overwhelmingly Positive (785) - 98% of the 785 user reviews for this game are positive.
Release Date:
Dec 7, 2017
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Recent updates View all (29)

December 15

UPDATE: New journal issue, minor bug fixes

We pushed an update yesterday afternoon that added a new issue to the journal with some "battlefield medicine" themed puzzles. We also made the following minor bug fixes:
  • The game's content files are now opened as read-only, which should hopefully fix some of the antivirus-related crashes some players have been experiencing.
  • Atom spawn/consume effects on glyphs are now cleared when the simulation is stopped, which should fix a bug causing "ghost atoms" to linger on the board.
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December 7

Opus Magnum has left Early Access!

Opus Magnum has left Early Access!

In the coming weeks we'll continue fixing bugs as they arise, and are hoping to add at least one or two additional journal issues. Our thanks go out to everyone who provided feedback, suggestions, and puzzle submissions throughout the Early Access process; it's always appreciated, and always makes our games better.
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About This Game

“It is not an exaggeration to say that without alchemical engineering, civilization would not exist.”

Hailed as the most promising alchemist of his generation, Anataeus Vaya has just accepted a position as Head Alchemist of House Van Tassen, the oldest and richest of the city’s ancient Houses. But dangers lurk behind the family’s opulent facade, and alchemy alone may not solve every problem.



Opus Magnum is the latest open-ended puzzle game from Zachtronics, the creators of SpaceChem, Infinifactory, TIS-100, and SHENZHEN I/O. 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 including programmable arms, customizable tracks, and more esoteric devices like Van Berlo’s wheel and the Glyph of Animismus.

Open-Ended Puzzles - Compete against your friends and the world to build the simplest, fastest, and most compact solutions to the game’s challenges. Export animated GIFs of your elegant designs to show them off.

Steam Workshop - Make and share your own puzzles with full Steam Workshop integration and an easy-to-use puzzle editor. Play the top user-submitted puzzles in the prestigious Journal of Alchemical Engineering, curated by Zachtronics!

Rich Story - Intrigues and dark plots swirl around the city’s ancient Houses. Alchemists, who hold the power to create almost anything known to science, are highly sought— and highly dangerous.

Solitaire Minigame - Alchemical engineering takes focus and concentration. Take a break with Sigmar’s Garden, an original alchemy-based solitaire game. Every game is winnable, but not every game will be won…

System Requirements

Windows
Mac OS X
SteamOS + Linux
    Minimum:
    • OS: Windows Vista / 7 / 8 / 10
    • Processor: 2.0 GHz
    • Memory: 4 GB RAM
    • Graphics: 1366 x 768
    • DirectX: Version 10
    • Storage: 600 MB available space
    Recommended:
    • OS: Windows Vista / 7 / 8 / 10
    • Processor: 2.0 GHz
    • Memory: 4 GB RAM
    • Graphics: 1920 x 1080
    • DirectX: Version 10
    • Storage: 600 MB available space
    Minimum:
    • OS: macOS 10.9+
    • Processor: 2.0 GHz
    • Memory: 4 GB RAM
    • Graphics: 1366 x 768
    • Storage: 600 MB available space
    Recommended:
    • OS: macOS 10.9+
    • Processor: 2.0 GHz
    • Memory: 4 GB RAM
    • Graphics: 1920 x 1080
    • Storage: 600 MB available space
    Minimum:
    • OS: Ubuntu 16.04+, SteamOS
    • Processor: 2.0 GHz
    • Memory: 4 GB RAM
    • Graphics: OpenGL 3.0, 1366 x 768
    • Storage: 600 MB available space
    Recommended:
    • OS: Ubuntu 16.04+, SteamOS
    • Processor: 2.0 GHz
    • Memory: 4 GB RAM
    • Graphics: 1920 x 1080
    • Storage: 600 MB available space
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