Opus Magnum

About

Master the intricate, physical machinery of the transmutation engine— the alchemical engineer’s most advanced tool— and use it to create vital remedies, precious gemstones, deadly weapons, and more.

Design Machines - Design and build machines that carry out alchemical processes using a variety of components.
Open-Ended Puzzles - Compete against your friends and the world to build the simplest, fastest, and most compact solutions. Export animated GIFs to show them off.
Steam Workshop - Make and share your own puzzles with full Steam Workshop integration and an easy-to-use puzzle editor.
Solitaire Minigame - Take a break with Sigmar’s Garden, an original alchemy-based solitaire game.

Storyline

“It is not an exaggeration to say that without alchemical engineering, civilization would not exist.”

Hailed as the most promising alchemist of his generation, Anataeus Vaya has just accepted a position as Head Alchemist of House Van Tassen, the oldest and richest of the city’s ancient Houses. But dangers lurk behind the family’s opulent facade, and alchemy alone may not solve every problem.

Screenshots

Artwork

Videos

Trailer

Release Dates by Platform

Expansions

Opus Magnum: De Re Metallica

Mar 17, 2026