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Puzzles about building alchemical machines

Official trailer1 / 6

Watching a machine work as intended and finding ways to improve it are central pleasures. Reviews describe enjoying refinement even after finding a working solution.

What makes it fun

  1. Build your own alchemical machine

    Place arms and program their movements to carry elements into the required product. Even for the same puzzle, you decide how the machine will get there.

  2. Watch your machine come to life

    Run the instructions and the arms carry elements as your machine assembles the required product. Watching the movements you planned work together is part of the pleasure.

  3. A graph invites another build

    After a solve, graphs show cost, cycles, and area. You can choose which measure to improve and rebuild a machine that already completes the puzzle.

Game details

As of Oct 29, 2026
Playtime at review
18.1 hoursMedian at the time of review (based on 100 helpful reviews)
Languages
Japanese, English, Simplified Chinese, Korean / 13 languages total

A typical run

A literature graduate who is neither a programmer nor fond of maths describes becoming absorbed in the freedom to create a personal solution.

A machine on a hexagonal board with instruction rows below (Opus Magnum, via Steam)
A machine on a hexagonal board with instruction rows below (Opus Magnum, via Steam)
Elements and mechanical arms on the board (Opus Magnum, via Steam)
Elements and mechanical arms on the board (Opus Magnum, via Steam)

What sets it apart

Reviews describe performance graphs prompting further refinement. Moving on after a clear and polishing a finished machine offer different ways to enjoy it.

Learning curve and difficulty

One reviewer found that their compact mechanisms tended to take more cycles to complete, a habit revealed by the result graphs. A smaller layout was not the same as a faster solution.

A mechanism extending across the board with instruction rows below (Opus Magnum, via Steam)
A mechanism extending across the board with instruction rows below (Opus Magnum, via Steam)

What players like

The freedom to devise a personal solution is appreciated.

Reviews value rebuilding working solutions more efficiently.

Watching a completed machine run is described as satisfying.

Result graphs and comparisons with other players prompt further refinement.

Reviews appreciate showing their solutions as GIFs.

Common complaints

Reviews describe the minigame itself as unappealing.

Reviews find the repetition required for a minigame achievement burdensome.

Reviews mention waiting while testing a machine.

Who it’s for

For players who enjoy watching machines run and refining solved puzzles.

Who might not enjoy it

One reviewer who aimed only to clear stages found the work repetitive later on. Consider whether refinement itself appeals to you.

A hexagonal board beside character dialogue (Opus Magnum, via Steam)
A hexagonal board beside character dialogue (Opus Magnum, via Steam)
Opus Magnum
Opus Magnum

97% Overwhelmingly Positive ・ US$19.99

View on Steam ↗

Image: Opus Magnum on Steam