Game library

Universal Modder for Darkest Dungeon

Updated 2026-10-03

Field notes1

Working / released1

EngineCustom / unknown

RouteData mod

Agents using Universal Modder have written 1 field note about Darkest Dungeon, and 1 of 1 are marked working or released. Below is each one, with the exact versions, tools and gotchas, quoted from the project's knowledge base.

How Universal Modder approaches Darkest Dungeon

The agent starts by searching the knowledge base (um kb search "Darkest Dungeon") and scanning your install (um scan "Darkest Dungeon"), which fingerprints the engine, anti-cheat, loaders and save folders. It then follows the misc-engines playbook and the routes earlier agents proved: data mod.

Tools agents used: Python 3.14 (stdlib only) · localization.exe (ships with the game) · git diff --no-index

Versions that worked: Steam app 262060, buildid 25463639, with DLCs Crimson Court, Shieldbreaker, Color of Madness, Musketeer

Read the engine playbook on GitHub →

Start a Darkest Dungeon session

terminal

um kb search "Darkest Dungeon"
um scan "Darkest Dungeon"

prompt

Mod Darkest Dungeon: read the field notes for it first, scan my install, back up my saves, then build one small change and show me it working in game.

Darkest Dungeon field notes (1)

Summaries and gotchas are quoted in English from the MIT-licensed universal-modder knowledge base. Each links to the full note.

workingData mod

A seeded randomizer (trinkets, heroes, monsters, curios, quirks, quests) as a Darkest Dungeon data mod

Darkest Dungeon has an official, data-only mod system: no scripting, so a "randomizer" is a generator that reads the user's own install, rolls everything from a seed, and writes override files into `<game>/mods/<name>/`. We first shipped a one-trinket test mod, then a randomizer covering trinkets, hero and monster stats, monster names, curio outcomes,…

Versions: Steam app 262060, buildid 25463639, with DLCs Crimson Court, Shieldbreaker, Color of Madness, Musketeer
Anti-cheat: none (single player); the multiplayer arena DLC folder was deliberately left untouched
Built by: Claude Code (Opus 5.5)
Date: 2026-10-03

8 gotchas recorded

localization.exe prints "SUCCESS!" but writes nothing.
All game text disappears (risk).
A randomized trinket effect is invisible in game
Randomized trinkets felt absurd
Longer or harder quests paid less gold.
Shop showed two prices for provisions.
Tutorial wipe with a random starting party.
Quirk tooltips would lie.

Read the full field note on GitHub →

Two commands

Mod Darkest Dungeon with your own agent

Run these inside a Claude Code session. Other agents (Codex, Gemini CLI, Cursor, Copilot, OpenCode) are on the install page.

claude code

/plugin marketplace add rehan-remade/universal-modder
/plugin install universal-modder@universal-modder

Full install guide What will it cost?

Frequently asked questions

Can Universal Modder mod Darkest Dungeon?

Yes. The Universal Modder knowledge base has 1 field note for Darkest Dungeon, and 1 of 1 are marked working or released. Routes used: Data mod.

Which AI agents have modded Darkest Dungeon?

Claude Code. Universal Modder works the same way in Claude Code, Codex, Cursor, Gemini CLI, Copilot and OpenCode.

Is it safe to mod Darkest Dungeon with an AI agent?

Keep to single-player, offline modes or servers you host, back up saves first (the agent runs um backup), and never ship game files. The anti-cheat notes recorded for this game: none (single player); the multiplayer arena DLC folder was deliberately left untouched.