
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 2d ago
I was a fan of Spacechem, and started playing this game when it first came out, almost 10 years ago. Sometimes I play weeks in a row, sometimes I forget about it for years. It's weirdly addicting, and satisfying to find and optimize solutions. Highly recommended
Not a misnomer. The best I can do to describe why this game is fun, is the feeling of turning in a homework assignement that you worked really hard on and seeing it do well. That feeling keeping you in flow like trance as you chase the next assignment for a total of well over 20 hours (and that's not even counting community content or the DLC!). If you've enjoyed any other Zachtronics or problem solving style games, you'll want to play this one. I think it's name is more than fitting. I have a few gripes with the unskippable story intermission and the sigmas garden minigame (seriously you want me to do 100 of these for the achievement?!) But maybe that too is Zach's genius way of gently coercing you into creating yet another automation. But in total those few negatives don't even move the scales an inch when weighed up with the absolute ton of mechanics, puzzles and sheer joy in seeing your arms, glyphs and tracks turning reagents into products in perfect unison. Opus Magnum is as the name suggests a master piece. It's not a game for everyone. But if you click at all with that feeling of a job done well, then there are few ways to get that high as consistently as Opus Magnum.
One of the most unexpectedly awesome games I've ever played. I'm playing this and Kaizen currently and now this genre is in my top favorites. When you get to use your creativity to come up with a solution, it creates the most satisfying progression. Especially to go back and improve your designs later after you've gotten better
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