
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 4d ago
most beautiful zach-like. most accessible zachtronics game also. i revisited several and only had enthusiasm for this and certain games in Last Call BBS. the beauty really matters, man. a lot of zach-likes look like a dog's hole, how can you think under those conditions
Solid automation game. It's a pure form of Factorio et al; and I'm not saying that as a virtue or defect. Sometimes you want the fluff and sometimes you want the pure, clean thinking.
Even though my brain can't comprehend the puzzles in this game, it's fun to slave over them for hours just for the solution to be so bad you slave over them for another hour. Great game
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