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Opus Magnum

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!

97%
Overwhelmingly Positive
DeveloperZachtronics
PublisherZachtronics
Release DateDec 7, 2017
$19.99
Peak Players1.4K
Metacritic90
PlatformsWindows · macOS · Linux
Indie
Simulation
Game Vitals

Live snapshot

Player Activity

Current peak
150
Peak · last 90 days
584
All-time peak
1.4K

Price

Current price
$19.99
Lowest tracked
$9.99since Feb 5, 2026

Review Sentiment

Launch week
—
Last 30 days
95%
All-time positive
97%
Review Statistics
Total Reviews7.2K
Positive: 7.0K (97%)Negative: 197 (3%)

0%

Reviews from Steam Deck

0%

Dev Response Rate

45h

Avg Playtime at Review

62%

Credible Reviews