Opus Magnum

Opus Magnum

Zachtronics · December 7, 2017 · Puzzle, Programming, Automation, Indie, Simulation

Buy the Opus Magnum key for Steam from Driffle INC at $9.63 — the cheapest of 10 stores we compare.

PC
Overwhelmingly Positive97% · 7,28490Metacritic107playing now
Best price 50 Good deal
$9.63-52%
lowest tracked $6.79
Driffle INC Buy at Driffle INC

Prices last checked

More games under $10 →

Where to buy Opus Magnum — official stores

Steam
Steam
Standard Edition · Steam
$19.99
Buy
Humble Store
Humble Store
Standard Edition · Steam
$19.99
Buy
GOG
GOG
Standard Edition · DRM-Free
$19.99
Buy
Fanatical
Standard Edition · Steam
$19.99
Buy

Cheapest Opus Magnum keys — keyshops

Keyshops are third-party marketplaces — keys are resold and can be region-locked or a different edition. Check the listing's region & edition before buying.

Driffle INC
Standard Edition · Steam
$9.63
Buy
Eneba
Standard Edition · Steam
$9.90
Buy
CJS CD Keys
CJS CD Keys
Standard Edition · Steam
$10.18
Buy
Keycense
Standard Edition · Steam
-55%
$10.19
$22.62
Buy
Gameseal
Standard Edition · Steam
$10.44
Buy
Kinguin
Standard Edition · Steam
$14.63
Buy

Some store links are affiliate links — playze may earn a commission at no extra cost to you. It never changes the price you pay, and the cheapest confirmed price is always shown in the Best price box above.

Opus Magnum price by region

Opus Magnum costs $5.75 in Georgia (USD), £7.29 in the United Kingdom, €8.60 in Europe (EUR), $9.63 in the United States, CA$22.49 in Canada, NZ$24.79 in New Zealand, A$26.95 in Australia, zł37.75 in Poland and R$50.49 in Brazil right now.

Cheapest Opus Magnum offer in each region, in local currency
RegionBest priceOfficial storeKey shopStores
Georgia (USD) $5.75 $5.75 $9.63 9
United Kingdom £7.29 −46% £13.49 £7.29 8
Europe (EUR) €8.60 −40% €14.25 €8.60 9
United Statesyour region $9.63 −52% $19.99 $9.63 10
Canada CA$22.49 CA$22.49 — 4
New Zealand NZ$24.79 NZ$24.79 — 3
Australia A$26.95 A$26.95 — 4
Poland zł37.75 zł37.75 zł38.50 5
Brazil R$50.49 R$50.49 R$54.59 4

Each row is a real price from that region's own stores, not a currency conversion, so the figures are not directly comparable. Switch regions in the header to shop the one you buy in.

Screenshots

About Opus Magnum

✦ AI summary

Build elaborate alchemical machines using programmable arms, tracks, and mystical components to transmute elements and solve open-ended puzzles in this physics-based engineering game from Zachtronics. Compete globally to find the simplest, fastest, and most compact solutions, create custom puzzles for Steam Workshop, and uncover dark conspiracies within a rich narrative of ancient Houses and dangerous alchemists.

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!

Opus Magnum — game info

Platforms
Windows, macOS, Linux / SteamOS
Steam Deck
Playable
Player modes
Single-player
PC Game Pass
Not included
More games like this:Mac gamesLinux games

Opus Magnum in the rankings

DLC & expansions

🎁 Complete the collection

Base game + 1 of 1 DLC at today's best prices.

$22.62
to own everything

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

✦ AI summary

Opus Magnum is a puzzle game where players manipulate alchemical reagents and compounds to solve increasingly complex challenges, and most players find the core experience of designing and watching their solutions execute to be deeply satisfying. The game excels at delivering that rewarding "aha" moment when a puzzle clicks, though optimization challenges can frustrate some players who struggle with later levels or the urge to perfect cycle counts.

Recommended Sep 30, 2026
Peak
1 found this helpful
Recommended Sep 29, 2026
great game, watching your finished solution is incredibly fun
1 found this helpful
Recommended Oct 2, 2026
epic
Recommended Oct 2, 2026
Extremely satisfying to solve a puzzle. Not as hard as I thought it would be. Highly recommend.
Recommended Sep 30, 2026
>boot up game >pull up unfinished solution >bang my head against a wall >ragequit after 2 hours of trying to optimize cycles >repeat love this game
Recommended Sep 28, 2026
[h1] If you know Zachtronics, here you are going to larp as an alchemy erudit [/h1] If you are not familiarized with Zachtronics games here is what you can expect: Zachtronics has a theme that repeats in all their games, that being puzzles based on programming or divide and conquer with some kind of flavor for you to larp and get immersed as a fake technicist on a usually complex system. In this case as I said above, you will be roleplaying as an scholar of alchemy that works for a family. This is game is a cellular automata kind of game where each cell has a specific behaviour, you will given starting cells (Reagents) that you will need to manipulate with other cells ("Mechanisms" that will move the compound and "Glyphs" that will bind, unbind or mutate the reagents or compounds) to form a particular "Product". The problem solving comes in space awareness, programming mechanisms and your desire to be efficient in time, space and cost. Your solution is compared against the normal distribution so you can know how bad or good you did. If you like this kind of game, check for other Zachtronic games like: Shenzhen I/O, where you can do more tangible things with electronics; TIS-100…

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