Mod List

• The Official Unofficial Modding Server for if you need help installing mods, setting up your mod loader, want help creating a mod, or just want to talk about mods in general.

Library mods

• Brimstone: An API for Quintessential of common procedures.

QoL and Utility mods

• Alchemi-Net: Adds a Gopher browser, allowing you to browse events in-game.
• CollisionPatch: Makes the collision the same as newest version of the game. Zip file archived by Haxton, mod made by icwass
• FrameratePatch: Improves game performance with code tweaks.
• FTSIGCTU: Adds a number of QOL features, like mirroring parts, a track-editing tool, and more.
• Glyph Renderer: a small mod that draws every registered part type and exports them to a folder.
• OMComments: Adds the Comment glyph.
• OMG: A Command line utility to make GIFs from solution files.
• Zoom Tool: Allows zooming in and out of the solution editor using ctrl-comma and ctrl-dot.

Campaign/Journal Mods

• A Neu Age A campaign for the Neuvolics mod.
• A World At War, Prelude Journal (Discord Link): Page 2 of Wartime Alchemy, a journal meant as a prelude to a bigger project.
• Disjoint Alchemy A (short) campaign focused on puzzles with disjoint reagents and products.
• Extransmutations Journal: Small puzzle pack focused mostly on Extransmutations, along with a plethora of other supporting mods.
• Exploring Impetal (Discord Link): A small journal for impetal
• Investigation (Discord Link) A very small journal involving True Animismus and Fluxismus
• Reductive Metallurgy Campaign: A campaign for the Reductive Metallurgy mod.
• The Campain (Discord Link): A short joke campaign using vanilla mechanics only. Happy late april fools.
• True Animismus Campaign: A campaign for the True Animismus mod.

Atom focused mods

• Alchemical Inversions A mod that adds glyphs and atoms that only a cheshire alchemist would understand
• Complicated Elements: A mod that adds composite cardinals, and a glyph to create them.
• Extransmutations: Adds a plethora of cardinal-focused transmutations and glyphs, along with Ichor.
• False Aether: Adds new versions of salt, cardinals, and animismus.
• Fanolytics: Adds atoms that respect the symmetries of the Fano plane.
• Halving Metallurgy: A mod that introduces the concept of half-promotions.
• Impetallurgy: Added an alternate sets of organic metal, along with unique glyphs to handle both substance
• Metal Quintessence A mod that adds chromium, the metallic analog of Quintessence.
• Miraculum Edere: A mod which attempts to unify most other content mods together. (Not recommended for those new to modding)
• Neuvolics Adds a new metal-like family of elements.
• Origami: Adds the orimetals, a twelve-atom family that transforms like the alternating group A₄. Interfaces with the Senneumetals when present.
• Prima Cyclia: Adds Sulfur and incorporates it into a cycle of primes alongside the existing Quicksilver, Vitae, and Mors. Also adds Oxygen and Phlogiston, accompanying Sulfur as a small family of volatile elements.
• Prima Materia: Adds Sulfur, a new ring of elements associated with it, and Primae, the underlying substance that gives the world form.
• Reductive Metallurgy: A mod that introduces glyphs that can demote metals.
• Sennmetals: A mod that adds the Sennmetals, the anti- counterpart to the Neumetals.
• True Animismus: A mod that introduces new ways to manipulate Vitae and Mors.
• True Salt: Adds two new "tiers" of salt and related glyphs, as well as a glyph that can turn any atom into salt.
• Uncommon Alchemical Primes: A modular mod that adds several sets of elements and glyphs that can be toggled on/off by campaign mods.
• Unstable Elements: Adds unstable Aether and Uranium atoms, and a glyph for producing Uranium.
• Vacancy (Discord link) A mod that introduce Vaca, and glyphs that interact with it.

Other Content Mods

• Embrace Infinifactory: Adds gameplay elements from "Infinifactory", like welders and conveyor belts.
• Embrace Molek Syntez: Adds gameplay elements from "Molek Syntez", i.e. the manipulators.
• Extrawners: A mod that adds random inputs and multi-outputs, computation-like rules, catalysts and more. Mostly supersedes Extransmissions.
• Misc. Glyphs: A mod that adds various glyphs of dubious use and comedy
• Scaffolding Glyphs: Adds glyphs of scaffolding that create a single instance of an atom on startup.

Check out projects tagged with quintessential-mod for more.

The TestMod is also available as reference, but is outdated and incompatible with Unstable Elements.

External webtools and programs

• Opus Magnum Mapping A mapping dictionary of the ingame code
• Opus Magnum Puzzle Editor (aka OMPuzzle): A website that can edit or generate puzzle files to get around restriction the in game editor has, or even make production puzzles.
• Opus Magnum Stoichiometry Calculator (aka OMSC): A website you can use to calculate transmutations (both vanilla and modded).
• Fenhl OM Official Molecule Database: A website that contains every named and unnamed molecule from every official puzzle, competition, or event hosted by the discord server.
• Opus Magnum Periodic Table (aka OMPT): A (mostly up to date) chart of atoms from mods.
• Opus Magnum Modded Molecule Builder (aka OMMMB): A website cataloguing every vanilla and modded atom that lets you create molecules with them, and export as picture or svg.
• Opus Magnum Molecule Builder Builder (aka OMMBB): A tool made for Opus Magnum Modded Molecule Builder to make setting up initial molecule structures easier, befor copying them over to place the bond structure.
• Opus Magnum Assets: The shared resources that OMMMB, OMPT, and OMSC all use.
• Opus Magnum Glyph Tool (aka OMGT): A Godot "game" that quickly generates stroke and glow textures for custom glyphs