Opus Magnum

Zachtronics / Dec 7, 2017 / Indie, Simulation

windows
Mac
linux
Steam Deck Playable

116 playing now

That's more people than live in the Pitcairn Islands.

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!

Can your PC run it?

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Part	Your PC	MinimumNot sure	RecommendedNot sure
CPU	Not set	2.0 GHz Can't tell	2.0 GHz Can't tell
GPU	Not set	1366 x 768 Can't tell	1920 x 1080 Can't tell
RAM	Not set	4 GB RAM Can't tell	4 GB RAM Can't tell

What's new

UPDATE: Small bug fixes

2026-07-28

This update fixes a few small bugs: • Fixed a bug in today's earlier update where the folder picker dialog on Windows was stuck behind the game window (I have three monitors and did not notice, sorry not sorry). • Fixed a bug where the solitaire music would continue playing when exiting Sigmar's Garden II in the journal. • Fixed a bug in the custom puzzle editor UI where the blackout overlay was offset incorrectly and had a cutout in the top-right corner.

Open on Steam

What players say

Overwhelmingly Positive

97% positive, 4,531 reviews

Recommended37 hrs played

I'm here because of Goodbye Galaxy and I think this video is the best advertisement for the game https://www.youtube.com/watch?v=W_Ekun0WDIk

135 found this helpful, 2026-07-06

Recommended45 hrs played

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 solutions. I can be creative with my solves without feeling limited to only following a set of rigid and obscure rules, which is why I never...

120 found this helpful, 2026-03-14

Recommended1,430 hrs played

One of the best games I've ever played. I spent countless hours optimizing and enjoyed every aspect of this game.

47 found this helpful, 2026-02-20

Recommended11 hrs played

I discovered this game through Goodbye Galaxy's video How I Accidentally Set a World Record in Opus Magnum and five minutes in without understanding what was going on I immediately knew I would love this game and needed to get my hands on it desperately. The reason I was so immediately interested is simple; Opus Magnum is a coding game. I love code. End post. It can be extremely hard to wrap my head around,...