Steam reviews

Overwhelmingly Positive

97% of 6,859 reviews

Critic scores

Metacritic

Generally favorable

Aggregated from professional reviewers. OpenCritic and others are on the roadmap.

Where to play

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Simulation Live▼Cooling off

OPUS MAGNUM

Opus Magnum has 65 concurrent players on Steam right now. Its 24 hour peak is 97 and its all-time peak is 121. Data refreshes every 5 minutes from the official Steam Web API.

DEV · Zachtronics2017

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!

Down 33% in 24h. Check the patch notes.
Currently at 54% of the all-time peak of 121 players.
Last updated 6 months ago: Volume CVIII, Issue VII: Foodways.

Playing now

24h peak

24h change

▼ 33.0%

Quick verdict

Is Opus Magnum still alive in 2026?

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PREVIOUS 24 HOURS

GALLERY & TRAILERS

1 / 6

ACROSS PLATFORMS

STEAMLIVE

Current

24h peak

All-time

121

TWITCHLIVE · VIEWERS

Watching now

No live streams

Nobody is streaming this game on Twitch right now.

Xbox · PlayStation · Nintendo

No public concurrent-player API exists for these platforms. Other sites guess by scraping achievement timestamps or leaderboards. We won’t make up numbers. If the platforms ever ship a real API, real numbers will show up here.