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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
1 Aug 2026

Latest update

Announcement

UPDATE: Small bug fixes

This update fixes a few small bugs: Fixed a bug in today's earlier update where the folder picker dialog on Windows was stuck behind the game window (I have three monitors and did not notice, sorry not sorry). Fixed a b…

3 changesFixUI/audioRead announcement

Update history

Browse past updates and patch notes for this game.

29 updates

Gallery

In-game media