Install
npx skills add https://github.com/rehan-remade/universal-modderRun it in a terminal, then start a new agent session so the skill loads. Read the repo's README and scripts before you install: skills run with your agent's permissions.
What it does
universal-modder is a plugin of 11 skills, a three-agent team and a Python CLI called um for modding PC games you already own. The main mod-any-game skill runs the same loop each time: search a shared knowledge base, scan the game to find its engine and modding route, set up a safe lab with saves backed up, read the actual code, build one working slice, generate assets, check it in the real game, then package it.
It ships engine playbooks for Unity, Unreal, .NET/XNA games such as Terraria and Stardew Valley, Godot, Source, Bethesda games, Minecraft and many others. Other skills cover game research, reverse engineering with tools like ILSpy and Ghidra, an asset pipeline that turns art into engine-ready frames, game automation, showcase videos, mashup mods, porting mods to new versions and publishing.
Art, 3D, sound effects, music and voice come from fal through its MCP server, with a local ComfyUI server as a no-key option for images. The README states it refuses to inject into online games with anti-cheat, write cheats against other players, or bypass anti-cheat, DRM or ownership checks, and that it never ships game files or decompiled code.
Features
- Full modding loop from engine scan to packaged mod
- Engine playbooks for dozens of game engines
- Art, 3D, audio and voice through the fal MCP server
- Tests mods in the running game and backs up saves
- Shared knowledge base of field notes from past mods
Limits
- Asset generation runs on fal (paid per use) or a local ComfyUI server
- Needs Git, Python 3.10+ and ffmpeg; Blender for 3D-to-sprite renders
- Only for games you own; online games with anti-cheat are refused
