Opus Magnum: De Re Metallica

Here is an excerpt from Opus Magnum: De Re Metallica's description on Steam:

An independent story set before the events of Opus Magnum, De Re Metallica follows a maverick alchemical researcher named Saverio Daas, who believes he can unlock metallurgical secrets that even the Imperial Academy has not uncovered! Along the way he’ll clash with established orthodoxy, bicker with his assistant, and attract attention from the Great Houses. What happens when a new invention becomes worth much more than its weight in gold?

De Re Metallica is an independent mini-campaign, and includes:

• Three new chapters of puzzles, with difficulty similar to the second half of Opus Magnum
• Three new glyphs, with the ability to manipulate metals in heretofore unknown ways
• New story, cutscenes, and music from the original writer and composer Matthew S. Burns
• A new "House Colvan" variant of Sigmar's Garden, where metals are matched in sequential pairs