
Opus Magnum is an exceptional Simulation/Indie that raises the bar for the genre.
95
Verdict
97%
Steam
92
IGDB
Verdict score based on confidence-adjusted Steam reviews?
Overwhelmingly Positive on Steam (97% positive from 6.7K reviews)
Critically acclaimed (92/100 critic average)
Standout indie gem
Still in Early Access — content may be incomplete
Opus Magnum is a puzzle-based programming game developed by Zachtronics. It was released for Microsoft Windows, Linux, and Mac in December 2017, following about two months of early access. In the game, the player must assemble a series of machines using various tools and program them to complete alchemy-related tasks. The player can advance with any working solution to each problem, but is challenged through leaderboards to produce a machine that does the task in the shortest time, with the lowest cost of materials or the smallest occupied area. Opus Magnum is based on The Codex of Alchemical Engineering, one of the earliest Flash games made by Zach Barth prior to establishing Zachtronics.

Runs well on modern hardware.
Last updated 11h ago
I'm so glad Zachtronics exists! After just a few hours, I can already tell this game is absolutely fantastic. I love the puzzles and how they're integrated into the story. It really reminds me of the incredible Infinifactory, but in 2D with its own unique mechanics and charm. I can't wait to dive even deeper! Well done! :3
good puzzle game disguised as an automation game too bad I have the intelligence of an average chair to be able to play this properly
saw this game on instagram reels (???) and was intrigued, decided to try it out and wow... the gameplay is fun and challenging and the atmosphere of the game itself is incredibly cool. music is just the cherry on top! it might be not for everyone, but if ur into puzzles and automation and alchemy, this game might be just perfect...
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