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Opus Magnum cover

Opus Magnum CD Key

PC price comparison · Zachtronics · Dec 7, 2017

IndieSimulationMetacritic 90

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!

Lowest final price

$12.67+ checkout fee

at Eneba · Standard Key reseller

Historical low: $12.67 on November 2, 2026

Get the best deal ↗

Compare Opus Magnum key prices

Sorted by final price including fees, never by commission.

  • SteamOfficial

    Standard · Steam · Global

    $19.99 · fees: none
    $19.99
    Go to store ↗
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Opus Magnum price history

Price history has been recorded since Nov 2, 2026.
The chart appears after a few days.

Historical lows by store

  • Eneba$12.67
  • Steam$19.99

About Opus Magnum

“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…Read more
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Opus Magnum system requirements

Minimum

  • Requires a 64-bit processor and operating system
  • OS *: Windows Vista / 7 / 8 / 10
  • Processor: 2.0 GHz
  • Memory: 4 GB RAM
  • Graphics: 1366 x 768
  • DirectX: Version 11
  • Storage: 600 MB available space

Recommended

  • Requires a 64-bit processor and operating system
  • OS *: Windows Vista / 7 / 8 / 10
  • Processor: 2.0 GHz
  • Memory: 4 GB RAM
  • Graphics: 1920 x 1080
  • DirectX: Version 11
  • Storage: 600 MB available space

Opus Magnum key FAQ

+What is a Opus Magnum CD key?

A Opus Magnum CD key is a digital code that unlocks the game on a PC platform such as Steam. After redeeming it, you download the game directly from that platform and it stays in your library.

+What is the cheapest price for Opus Magnum?

The cheapest Opus Magnum key right now costs $12.67 at Eneba. We compare 2 offers from 2 stores, and the price already includes payment and service fees.

+What is the historical low for Opus Magnum?

The lowest price we have recorded for Opus Magnum is $12.67 on November 2, 2026. Check the price history chart to decide whether to buy now or wait for the next sale.

+Is it safe to buy a Opus Magnum key?

Buying from an official store such as Steam, GOG or Epic Games is always safe. Key resellers are often cheaper but sell keys second-hand, so check the region lock and buyer protection before you buy. Every offer on GameKeyDeal is labelled as official or reseller.

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