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Opus Magnum
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!
What players say
Steam review score and the most-helpful voices, which may include critical ones. Data as of 2026-05-20.
“I am not a computer programmer and I don't enjoy math. I have a degree in English Literature, which doesn't make me the obvious target audience for a game like this. And yet somehow even I got addicted to Opus Magnum. I enjoy the game is because the puzzles have open-ended…”
— a player, Steam review · 45 hrs played“One of the best games I've ever played. I spent countless hours optimizing and enjoyed every aspect of this game.”
— a player, Steam review · 1,430 hrs played“Saw it on a youtube video (GoodbyeGalaxy on yt) and thought "man that seems like a game i would like" and booooyyyy was i right. I have 13.4 hours as of rn and i love it so much. Genuinely a genius concept of a game. If you like Satisfactory, techtonica, factorio, or any other…”
— a player, Steam review · 34 hrs playedPlayer activity
Monthly average concurrent players. Live count fetched 2026-07-11 12:41 UTC · history via SteamCharts.
Achievement stats
Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-07-25.
Price tracking
US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-11. Steam prices vary by region — always confirm your local price on Steam.
Regional prices at last sample, in local currency — Steam sets each region's price independently.
Cheapest → most expensive, converted to USD at ECB reference rates (2026-07-24). Relative comparison only.
Latest official news
Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.
UPDATE: Russian journal translation
Today's update adds a Russian translation for the Journal of Alchemical Engineering, contributed by TrottingHeart from the unofficial Zachtronics Discord.
UPDATE: Korean DLC translation
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 agai
UPDATE: Korean DLC and journal translation
Today's update adds a Korean translation for the De Re Metallica DLC campaign and the Journal of Alchemical Engineering, contributed by Haxton from the unofficial Zachtronics Discord. It also contains
UPDATE: Minor improvements
Today's update includes the following changes: Puzzles in the journal now have a variety of music instead of a single song. Fixed a crash when loading a solution that referenced an input or output tha
UPDATE: Various quality-of-life fixes
Today's update adds a few small quality-of-life fixes: You can now click on the journal issue name to open a menu that lets you quickly select a different journal issue. The current journal issue is n
Games like Opus Magnum
From our knowledge graph — ranked by shared traits, not a black box. Each card says why it's here.
SHENZHEN I/O
94.5% · 2,778 reviews
shares Programming, Automation, Building, Logic
SpaceChem
93.4% · 3,411 reviews
shares Programming, Automation, Building, Logic
Human Resource Machine
91.9% · 2,363 reviews
shares Programming, Automation, Logic, Great Soundtrack
Infinifactory
95.0% · 1,976 reviews
shares Programming, Automation, Building, Logic
Turing Complete
94.9% · 2,778 reviews
shares Programming, Automation, Building, Logic
EXAPUNKS
94.7% · 1,559 reviews
shares Programming, Automation, Logic, Great Soundtrack
7 Billion Humans
93.0% · 975 reviews
shares Programming, Automation, Logic, Great Soundtrack
The Howler
73.3% · 688 reviews
shares Steampunk, Great Soundtrack, Sandbox, Difficult
Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-05-20.
| Genres | Indie, Simulation |
| Player tags | Puzzle · Programming · Automation · Indie · Simulation · Logic · Singleplayer · Great Soundtrack · Steampunk · Building · Difficult · Sandbox (SteamSpy community voting) |
| Features | Single-player · Steam Achievements · Steam Workshop · Steam Cloud · Steam Leaderboards · Includes level editor · Family Sharing |
| Languages | English, French, German, Japanese, Russian, Simplified Chinese, Spanish - Latin America, Korean, Turkish, Ukrainian, Portuguese - Portugal, Czech, Polish |
| Achievements | 5 |
| Estimated owners | 200,000 – 500,000 (SteamSpy) |
| Official site | http://www.zachtronics.com/opus-magnum |
Minimum system requirements (PC)
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