Everything Game Dev Code
Game dev agents, commands and skills for 7 coding tools
- Best for
- Developers who want one set of game-dev agent instructions that works across Claude Code, Codex, Cursor and other coding tools
- Makes
- Game design docs, project setups, code and placeholder or AI-generated assets for Unity, Unreal, Godot and HTML5 games
- Made by
- MRCalderon3D (GitHub)
- Where you use it
- CLI
- Engines
- Unity, Unreal Engine, Godot, Web, Three.js
- Pricing
- Free and open source (MIT); optional AI asset generation uses a paid fal.ai key, about $2 to $10+ per asset pass by its own estimate
- Free plan
- Yes
- Open source
- Yes (MIT)
- Export
- Everything stays in your own project folder; generated assets are written to your project with a provenance file per run
- Status
- Available
Everything Game Dev Code is a free, MIT-licensed scaffold you clone and open in an AI coding assistant to give it a game-development workflow. According to its README, it bundles 42 agent roles, 66 slash commands and 107 skills, plus rules, phase contexts and hooks, with separate rule layers for Unity, Unreal Engine, Godot and HTML5 so conventions for one engine don't leak into another.
The same files are wired up for seven coding tools: Claude Code, Codex, Cursor, OpenCode, Kiro, Grok Build and Kilo. Commands cover planning (/plan, /gdd), engine setup (/unity-setup, /godot-setup, /unreal-setup, /web-setup), build fixes, QA reviews and an experimental /full-game command. Thirteen finished HTML games made with /full-game sit in the repo's samples folder, each generated in one run according to the README; one is a 3D game built on Three.js.
Asset generation is optional. Without an API key, the scaffold uses placeholder and procedural pipelines; with a fal.ai key, /generate-assets can make images, skyboxes, 3D models, sound, music, voice and video, printing a cost estimate first. The README puts a full asset pass at roughly $2 to $3 on the budget tier and $10 or more on premium. It also ships a curated list of MCP servers, including Unity's official MCP server and Blender control.
It overlaps with Claude Code Game Studios but targets more than one coding tool. The repo was created on March 27, 2026, by GitHub user MRCalderon3D. AIGamer hasn't tested it.
Limitation: The /full-game command that builds a whole game in one go is marked experimental, and the README recommends going step by step for real projects
FAQ
Is Everything Game Dev Code free?
Yes. It's open source under the MIT license. The only cost is optional: AI asset generation runs through a paid fal.ai key, which the README estimates at about $2 to $10 or more per full asset pass depending on quality tier.
Which AI coding tools does Everything Game Dev Code work with?
Its README lists seven: Claude Code, Codex, Cursor, OpenCode, Kiro, Grok Build and Kilo. Each gets an adapter that points back to the same shared rules, agents, commands and skills.
Which game engines does it support?
Unity, Unreal Engine, Godot and HTML5 (2D canvas or 3D WebGL), each with its own rule layer, according to the README.
How is it different from Claude Code Game Studios?
Both give a coding agent a set of game-studio roles and commands. Everything Game Dev Code is built to work across several coding tools rather than Claude Code alone, and adds an optional AI asset generation layer.
Sources
Compiled by AIGamer from Everything Game Dev Code's own pages and the sources below, checked 6 November 2026. We haven't tested Everything Game Dev Code hands-on.
- MRCalderon3D/everything-game-dev-code: GitHub repository and README
- MRCalderon3D/everything-game-dev-code: Changelog (versions 0.5.0, 0.6.0 and unreleased)
- MRCalderon3D/everything-game-dev-code: MIT license file
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