universal-modder
Universal-modder is a set of skills and tools that lets AI coding agents mod PC games you own, for people who want custom game changes without writing the code by hand.
What it is good for
- Adding new weapons or items to a PC game
- Making custom art, 3D models, and sound for a game mod
- Testing a game mod inside the running game
- Finding out what engine a game uses and whether it has been modded before
At a glance
- Who it is for
- Setup
- Guided command-line setup
Level 4 of 5. You copy and paste commands into a terminal by following the instructions. Comfortable territory for vibe coders.
- Cost
- Free and open source
- Type
- Skill or plugin
- Tasks
- Works with
- Claude Code, Codex, Gemini CLI, VS Code, Cursor, OpenCode
Momentum
- Rank this week
- Not ranked yet
- Best rank
- None yet
- GitHub stars
- 9,326
GitHub numbers as of Nov 2, 2026. Updated weekly.
Official links
Setup steps are on the official pages. We do not repeat them here, since they change.
Questions
- Is universal-modder free?
- Yes. It is free and open source (MIT license).
- Do I need to know how to code to use universal-modder?
- You do not need to write code, but setup means copying and pasting commands into a terminal by following its instructions.
- What does universal-modder work with?
- According to its own documentation, it works with Claude Code, Codex, Gemini CLI, VS Code, Cursor, and OpenCode.
- What is universal-modder good for?
- Adding new weapons or items to a PC game, making custom art, 3D models, and sound for a game mod, testing a game mod inside the running game, and finding out what engine a game uses and whether it has been modded before.
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