8.5K ·GitHub
What is this?
Universal Modder gives Claude Code (and other AI coding agents) a set of Agent Skills, a CLI called 'um', and a fal MCP server so the agent can find, reverse-engineer, and mod almost any PC game you own, then generate art, 3D, audio, test the mod in-game, and record a showcase video.
Universal Modder gives Claude Code (and other AI coding agents) a set of Agent Skills, a CLI called 'um', and a fal MCP server so the agent can find, reverse-engineer, and mod almost any PC game you own, then generate art, 3D, audio, test the mod in-game, and record a showcase video.Is this a standalone app, or does it plug into my coding agent?It is not a standalone app. It is a plugin/skill pack: the same Agent Skills, the fal MCP server, and the 'um' CLI get installed into whichever agent you already use (Claude Code, Codex, Gemini CLI, Copilot, Cursor, OpenCode).
It is not a standalone app. It is a plugin/skill pack: the same Agent Skills, the fal MCP server, and the 'um' CLI get installed into whichever agent you already use (Claude Code, Codex, Gemini CLI, Copilot, Cursor, OpenCode).How do I install this for Claude Code?Inside Claude Code run '/plugin marketplace add rehan-remade/universal-modder' then '/plugin install universal-modder@universal-modder'. Other agents (Codex, Gemini CLI, Cursor, OpenCode, Copilot) have their own one-line install shown in the README, or you can just git clone the repo and start your agent inside it.
Inside Claude Code run '/plugin marketplace add rehan-remade/universal-modder' then '/plugin install universal-modder@universal-modder'. Other agents (Codex, Gemini CLI, Cursor, OpenCode, Copilot) have their own one-line install shown in the README, or you can just git clone the repo and start your agent inside it.What do I need installed besides the coding agent?You need Git, Python 3.10+, and ffmpeg (uv recommended), plus Blender if you want 3D model to game-sprite rendering. A fal API key powers the fal MCP server and 'um fal' for AI-generated art/audio/3D; without a key you can use 'um comfy' against a local ComfyUI server instead.
You need Git, Python 3.10+, and ffmpeg (uv recommended), plus Blender if you want 3D model to game-sprite rendering. A fal API key powers the fal MCP server and 'um fal' for AI-generated art/audio/3D; without a key you can use 'um comfy' against a local ComfyUI server instead.Will it mod online multiplayer games or write cheats?No. It only touches games you own and refuses to inject into online games protected by anti-cheat, write cheats against other players, or bypass anti-cheat, DRM, or ownership checks. It also never ships game files or decompiled code in the resulting mod.
No. It only touches games you own and refuses to inject into online games protected by anti-cheat, write cheats against other players, or bypass anti-cheat, DRM, or ownership checks. It also never ships game files or decompiled code in the resulting mod.Do I need a Windows PC to mod my games?Windows games are driven natively or from WSL, and the window-capture/input automation ('um win') ships as two no-build PowerShell/C# tools, so the heaviest automation features target Windows. The skills and CLI themselves are plain Python and work alongside whichever OS your coding agent runs on.
Windows games are driven natively or from WSL, and the window-capture/input automation ('um win') ships as two no-build PowerShell/C# tools, so the heaviest automation features target Windows. The skills and CLI themselves are plain Python and work alongside whichever OS your coding agent runs on.What is the knowledge/ folder for?It is a shared knowledge base of field notes written by agents for other agents: the exact versions, the route taken, engine quirks, verification steps, and gotchas for games that have already been modded. Agents search it first and can open a PR with their own note when they finish.
It is a shared knowledge base of field notes written by agents for other agents: the exact versions, the route taken, engine quirks, verification steps, and gotchas for games that have already been modded. Agents search it first and can open a PR with their own note when they finish.What games have already been modded with this?Example projects include a tModLoader weapons pack for Terraria, a new playable civilization for Age of Empires II DE with 3D-rendered units, and real Minecraft running inside GTA V story mode via a Fabric mod plus ScriptHookV/ReShade bridge.
Example projects include a tModLoader weapons pack for Terraria, a new playable civilization for Age of Empires II DE with 3D-rendered units, and real Minecraft running inside GTA V story mode via a Fabric mod plus ScriptHookV/ReShade bridge.What does the agent actually do when I ask it to mod a game?It follows a fixed 10-step loop: search the knowledge base, recon and pick a route, set up a safe lab with saves backed up, read the real game code, build a working slice, generate assets, verify in the real game, record a video, package the mod, and write a field note for the next agent.
It follows a fixed 10-step loop: search the knowledge base, recon and pick a route, set up a safe lab with saves backed up, read the real game code, build a working slice, generate assets, verify in the real game, record a video, package the mod, and write a field note for the next agent.Which coding agents besides Claude Code can use this?Codex, Gemini CLI, VS Code/Copilot Chat, Cursor, and OpenCode are all directly supported with their own install steps; any other agent can just use the skills via 'npx skills add' or a plain git clone.
Codex, Gemini CLI, VS Code/Copilot Chat, Cursor, and OpenCode are all directly supported with their own install steps; any other agent can just use the skills via 'npx skills add' or a plain git clone.What are similar projects?skills, ArkWeb, decomp.wtf, image-to-3dlab, threejs-game-skills, Gnos, genex-desktop, ninja-ripper-2.10
skills, ArkWeb, decomp.wtf, image-to-3dlab, threejs-game-skills, Gnos, genex-desktop, ninja-ripper-2.10Which topics is it in?game-assets, blender, 3d-generation, steam, game-modding, comfyui, audio-generation, modding, claude-code-plugin, game-development, video-generation, knowledge-base
game-assets, blender, 3d-generation, steam, game-modding, comfyui, audio-generation, modding, claude-code-plugin, game-development, video-generation, knowledge-base