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Opus Magnum

Also known as Opus Magnum, om, opus magnum

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!

Last update
17 Jun 2026

Latest update

Announcement

UPDATE: Minor improvements

Today's update includes the following changes: Puzzles in the journal now have a variety of music instead of a single song. Fixed a crash when loading a solution that referenced an input or output that was deleted from…

3 changesFixGameplayRead announcement

Update history

Browse past updates and patch notes for this game.

24 updates

Gallery

In-game media