
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!
Modeled estimate, not a reported figure. How we estimate →
About

Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English, French, German, Japanese, Russian, Simplified Chinese, Spanish - Latin America, Korean, Turkish, Ukrainian, Portuguese - Portugal, Czech +1 more
Engagement
Hours played at review time, across 63 reviews with recorded playtime.
Reviews
Themes across 63 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
positive critical· bar length = how often the theme comes up
Reviews
Good puzzle game.
Starting a puzzle: "I am the dumbest person alive" Finishing a puzzle: "I am an actual genius"
A fun and genuinely challenging puzzle game. Every puzzle feels rewarding to solve, but what I enjoyed most is that the challenge isn't just finding a solution, it's finding the most elegant and optimized one. That design makes every level satisfying to revisit and improve. Only two puzzles really had me stumped: A Very Dark Thread and Universal Solvent, but overcoming them was very rewarding
Seemingly made for a 24" 1080p screen tops, with no UI scaling of any sorts. On modern screens, text is therefor basically unreadable and you have to play at 1080p, which even with integer scaling, looks weirdly blurry on a 4K screen.
Opus Magnum is my first game in the production genre (or however this games are called). I've always thought that these games should suit my puzzle and optimization coded brain but no game ever called to me. That is until I looked a little more into Opus Magnum and tried it. It really is a great game and most of the puzzles are completely solvable with enough thinking, unlike many puzzle games where it gets to a point that you have to spend days with each one and it becomes tedious. The style and vibes are also pretty good.
yummy game
Mechanical puzzles are fun
You could have one arm, one eye, and a ♥♥♥♥ that doesn't work, and still be a pro at this game. It's awesome!!!
Fun and engaging puzzle game. Mechanics are simple yet complex in a way that reliably scratches the brain. Difficulty curve is somewhat strange, especially after the second section, but overall very fun. 9.5/10, like any other Zachtronics game.
very good tutorial and I like how the story is folded into the puzzles but you don't have to pay attention to the story
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Trends
Modeled estimate over time, reconstructed from Steam's monthly review histogram.
Engagement
DAU/MAU are modeled from peak concurrent players (≈×8 and ×28) — Steam publishes no active-user counts, so treat these as rough estimates, not reported figures.
Audience
Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.
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