Where does an agent start?

At agent_skills/setting_overview.md. It routes the agent to the selected asset skill and engine API context.

Which models do the demos use?

The README demos use Meshy and Hunyuan3D for 3D, a Puppeteer + MoMask chain for rigging and motion, Mixamo motion, and MiniMax H3 locally for CG video.

The code is Apache-2.0. Hosted model APIs you choose to use are billed by their providers.

UE5

Starter kitFree

3AGameFactory (GameFactory-3A)

An Apache-2.0 framework of agent skills and pipelines that turns a game requirement into assets (image, 3D, motion, audio, CG video) and engine-ready code for UE5, Blender, Unity, Godot 4 and three.js.

GitHub stars: 956
License: Apache-2.0
Last commit: 2026/10/23
By: OpenDCAI

Download ZIP

View on GitHub

Listed from the author's README. GameSkill has not run this end to end yet. Agent support and install steps are as documented by the author.

Install

Any coding agent

git clone https://github.com/OpenDCAI/GameFactory-3A
cd GameFactory-3A

Open Codex, Claude Code or Gemini CLI in the folder, give it your game requirement and ask it to read agent_skills/setting_overview.md first.

Commands are copied from the project's README. Check the repository before running anything on your machine.

What you get

agent_skills/setting_overview.md: the entry point that routes the agent to asset skills and engine context
10 SKILL.md skills: asset QA for image, 3D object, 3D scene, motion, audio and CG video, plus game-cg-director, create-vfx-effects, game-feel and game_design
Asset pipelines: T-pose images, 3D objects, 3D scenes, rigs and motion, dialogue/SFX/ambience
Code pipelines for gameplay mechanics and UI (HUDs, menus)
Engine API context and reference adapters for UE5, Blender, Unity, Godot 4 and three.js

Good fit

Generating a full vertical slice (assets, gameplay, UI) from one brief
Fighting, FPS, racing and RPG prototypes, as shown in the README demos
Studios wanting a QA'd asset pipeline driven by agent skills

Not for

A quick, lightweight install; this is a large framework with model pipelines
Machines without a GPU, unless you use hosted model APIs

Overview

3AGameFactory is one of the largest open game-generation frameworks built around agent skills. You give a coding agent a game requirement; it reads setting_overview.md, generates and QA's the assets it needs, then writes engine-native gameplay and UI for the engine you picked.

The asset side covers images and T-poses, 3D props and avatars, reconstructed scenes, rigging and motion, audio, and CG cutscenes. Every asset type has a QA skill so the agent checks results before using them. The code side has mechanic and UI pipelines plus API context files for UE5, Blender, Unity, Godot 4 and three.js.

The README shows recorded demos for every engine: fighting, FPS, racing and RPG games, plus trailers and cutscenes. Contributors get a CPU-only smoke harness in agent_skills/develop_harness/.

Hermes GameForge is a lighter, offline game studio for Hermes Agent.
open-game-skills focuses on game feel and design rules.
MCP for Blender lets the agent drive Blender directly.

Requirements

Codex, Claude Code, Gemini CLI or another compatible coding agent
The target engine: UE5, Blender, Unity, Godot 4 or three.js
A GPU and model weights for local generation, or API keys (e.g. Meshy) for hosted models

Topics

FAQ

Install

Any coding agent

git clone https://github.com/OpenDCAI/GameFactory-3A
cd GameFactory-3A

Open Codex, Claude Code or Gemini CLI in the folder, give it your game requirement and ask it to read agent_skills/setting_overview.md first.

Commands are copied from the project's README. Check the repository before running anything on your machine.

Let your agent install it

Copy a prompt that points your agent at the repository and the documented command, so it doesn't have to guess.

Compatibility

Agents

Claude Code Codex Gemini CLI

As documented by the author.

Engines & tools

Unreal Unity Godot Blender Web (Phaser / Three.js)

Works well with

Skills the author points to as related or as the better fit for neighbouring tasks.

Hermes GameForge

GDT

Starter kit

Hermes GameForge

A game-development plugin for Hermes Agent with 10 agent skills and 9 tools: SFX, music, NPC voices, pixel sprites, tilesets, low-poly 3D, web/Godot/Unity builds, a playtester that plays the build, and itch.io export. Runs offline by default.

GodotUnityUnrealHermes Agent

open-game-skills

GDT

Starter kit

open-game-skills

An MIT pack of about 190 SKILL.md agent skills for game design: combat feel, camera, traversal, world, validation, 2D/Spine and art pipeline, with a dispatcher and adapters for Three.js, PixiJS, Phaser, Cocos, Godot, Unity and Unreal.

Engine-agnosticGodotUnityClaude Code · Codex +1