GitHub Universal Modder: The Repo, Stars & How to Install

The official universal-modder repository lives at github.com/rehan-remade/universal-modder. Published on September 30, 2026 by developer Rehan Remade, it crossed 2,000 stars in its first 48 hours and is now above 3,400 — making it one of the fastest-growing open-source AI agent tools of October 2026.

Repository Overview

The repo is structured as an Agent Skill pack plus a Python CLI (um). It does not contain game files, decompiled dumps, or cheats. Instead, it ships playbooks, MCP server configs, safety rules and field-note templates that your AI agent reads at runtime.

Top-Level Structure

universal-modder/
├── skills/               # 10 agent skills (mod-any-game, game-recon, reverse-engineering, fal-assets…)
├── playbooks/            # 12 engine playbooks (Unity, Unreal, .NET/XNA, Godot, Source, Bethesda, Fabric, Genie…)
├── knowledge/            # Shared field notes AIs write for AIs
├── um/                   # The `um` Python CLI (scan, fal, sprite, render3d, kb, backup, publish…)
├── mcp/                  # MCP server configs for ILSpy, Ghidra, Frida, RenderDoc, fal
├── examples/             # Shipped example mods (Fal Arsenal, San Franciscans, Minecraft × GTA V)
├── AGENTS.md             # Read by any agent to bootstrap the loop
└── LICENSE               # MIT

Star Growth & Community Momentum

• Sep 30, 2026 — Initial release on GitHub.
• Oct 1, 2026 — Coverage on ClawdBytes, DEV Community and Russian-language tech press pushes it past 2,000 stars.
• Oct 2–4, 2026 Spanish, Portuguese and Korean coverage; example mods (Terraria nuke, AoE2 new civ, Minecraft×GTA V) go viral on Douyin and X.
• Oct 5–7, 2026 — Crossed 3,400 stars. MindStudio and Indies.es publish deep tutorials.

How to Install Universal Modder

Prerequisites

• Python 3.10 or newer
• ffmpeg on PATH (for showcase video cutting)
• uv (recommended Python package runner)
• Blender (only if you need 3D-to-sprite frame rendering)
• One supported AI agent: Claude Code, Codex, Cursor, Gemini CLI, Copilot or OpenCode

Install into Claude Code

# Add the plugin marketplace, then install universal-modder
/plugin marketplace add rehan-remade/universal-modder
/plugin install universal-modder@universal-modder

This drops in all 10 skills, the fal MCP server config, and the um CLI. For a longer walkthrough see our Claude Code setup guide.

Install into Codex

codex plugin marketplace add rehan-remade/universal-modder
codex plugin add universal-modder

Install into Cursor / OpenCode (clone method)

git clone https://github.com/rehan-remade/universal-modder.git
cd universal-modder
uv sync          # installs the `um` CLI and Python deps

Then point your agent at the cloned folder. Cursor reads AGENTS.md automatically; OpenCode picks up the bundled MCP config.

Install into Gemini CLI

Gemini CLI reads the same AGENTS.md. Clone the repo and launch gemini from the repository root. See the tutorial for a full first-prompt walkthrough.

The um CLI Commands

Every command ships with --help and examples, and every generation keeps a manifest. The most useful daily commands:

• um scan --list — detect all Steam/Epic/Xbox installs at once.
• um scan "GameName" — fingerprint one game: engine, version, anti-cheat status, save location, ranked modding routes.
• um kb search "GameName" — search the shared field-note knowledge base for prior work on that game.
• um kb write / um kb pr — write your own field note and open a PR so the next agent starts ahead.
• um backup --help / um backup create — snapshot, diff and restore save folders before the agent touches them.
• um fal sprite|image|edit|rmbg|model3d|rig|sfx|music|voice|video — call fal.ai for asset generation.
• um comfy … — same asset generation against a local ComfyUI server (no API key).
• um sprite / um render3d — cutout, palettes, sprite sheets, GLB-to-sprite via Blender.
• um win … — manage game processes by PID only (screenshots, input, audio capture).
• um publish check --help — block game files, decompiled dumps and leaked keys before release.
• um publish — package the mod for distribution.

Licensing

Universal Modder is released under the MIT license. You can use it commercially, modify it, fork it, and ship mods built with it — you just have to keep the license notice. The generated mod itself is yours; the project never ships copyrighted game assets.

Why the GitHub Repo Is Growing Fast

Most AI agent tools pick a single use case (code refactoring, docs, chat). Universal Modder picks a high-frustration vertical — game modding — and solves the whole loop: recon, reverse engineering, asset generation, in-game testing, and even the showcase video cut. The shared field-note knowledge base means every mod the community finishes makes the next one faster. That compounding effect is why the repo is pulling stars faster than most generic "AI agent" tools.

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