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“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. 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…

Opus Magnum
11mo ago
•
Global
Best Deal
$19.99
$8.71
-56%
Best Deal
Opus Magnum
11mo ago
•
Global
$19.99
$8.82
-55%
Opus Magnum
11mo ago
•
United States
•
+2
$19.99
$11.21
-43%
Opus Magnum PC Steam CD Key
22h ago
•
$19.99
$16.00
-19%
Opus Magnum STEAM digital (Region Free)
5mo ago
•
Worldwide
$19.99
$19.39
-3%
Opus Magnum | Steam
3d ago
$19.99
$19.83
Opus Magnum
5d ago
•
+2
$19.99
Opus Magnum
20h ago
•
+2
$19.99
Opus Magnum Steam CD Key
23h ago
•
Global
$19.99
$20.50
$8.71
is 35.36% above the historical low of$5.63
. There are currently 9 stores offering the game.Jul 8, 2026
UPDATE: Russian journal translationJul 3, 2026
UPDATE: Korean DLC translationJul 1, 2026
UPDATE: Korean DLC and journal translationYes, Opus Magnum is currently on sale with up to 56% off at select stores.
Right now, you can buy Opus Magnum for as low as $8.71, depending on the store and platform.
No, Opus Magnum is not currently on Xbox Game Pass. The cheapest way to play is to buy it as low as $8.71, depending on the store and platform.
On Steam, Opus Magnum is listed at $19.99 (MSRP $19.99).
The lowest recorded price for Opus Magnum is $5.63, based on past sales and discounts.
Opus Magnum is available on PC.
Opus Magnum is primarily a single-player experience.
The main story takes around 15 hours, while a completionist run averages 40 hours.
Opus Magnum launched on December 6, 2017.
The game requires at least 600 MB of free space.
Opus Magnum was developed and published by Zachtronics, released on 2017-12-06.
Opus Magnum has been rated 90/100 on Metacritic. Use these scores alongside player feedback to decide if it's worth adding to your library at its current price.
$8.71
, compared to an MSRP of$19.99
. Across all listings, there are currently 9 store offers for Opus Magnum, pulled from both authorized retailers and key marketplaces like Difmark, Driffle, Eneba, and G2Play. Whether you prefer buying from official sources or want to stretch your budget further through grey-market deals, Gamers Unchained helps you easily compare prices and find the best fit.Not sure what a game key is or how to redeem one on platforms like Steam, Epic Games, or Ubisoft Connect? You're not alone—and we've got you covered. Our quick guides break it all down for you—check them out and get gaming faster!