LittleJS AI plugin
LittleJS AI is a Claude Code plugin with five skills that scaffolds a complete HTML5 game on the LittleJS engine in one request.
- 86 ★ on the repository
- Last commit
- MIT
Minimal access
Why this level
- The plugin creates game project files in the chosen folder and sends nothing over the network itself.
Install
- Works in
In your terminal, with SkillFoxx CLI
npx skillfoxx add plugins/littlejs-aiDetects the agents on your machine, shows the access level and pins the version.
Other ways to install
Access and checks
How we reviewMinimal accessThe tool runs nothing and makes no network calls.
- The plugin creates game project files in the chosen folder and sends nothing over the network itself.
This is third-party code. Review the repository files before installing.
What it does
LittleJS AI is a kit for building HTML5 games on the fast open-source LittleJS engine. It holds starter templates, helper modules for menus, sound, effects and sprites, instructions for any coding agent and a Claude Code plugin. Once the plugin is installed, you can ask for a game in an empty folder, for example make me a breakout game. Claude creates a complete project with the engine, which opens straight from `file://` with no server and no `npm install`. The engine handles rendering, input, physics, collision and sound. The plugin ships five skills: engine rules, new game scaffolding, exact API signature lookup, fast recolorable atlas sprites and a level editor for your game.
Who it is for. Developers and hobbyists who build small browser games with an agent and want a working project from the first prompt.
Good fit when
- You need a working game base like breakout that launches with a double click on the file.
- The agent mixes up engine signatures and needs an exact API reference.
- Game levels need a custom editor built on the engine built-in 2D and 3D editors.
- You need simple recolorable sprites from the built-in atlas with no drawing.
Not a fit when
- The game must run on another engine: the rules and API here are for LittleJS only.
- You want a finished game with no development: ready projects are playable in LittleJS Arcade.
- The agent is not Claude Code: the plugin installs through `/plugin` and others get the repository instructions.
Example request
Make me a breakout game on LittleJS: a complete project that opens from a file with no server, with sound and a menu.Limitations
The plugin targets Claude Code and installs through `/plugin`, and other agents get general instructions in the repository. The project builds games on the LittleJS engine and contains no finished games: a separate LittleJS Arcade repository holds them. You only need to clone the repository to browse templates by hand, and the plugin brings everything else. When developing the plugin itself, load it from a working copy with `claude --plugin-dir .` using forward slashes in the path or the plugin silently fails to load.
How to disable. Remove the plugin with `/plugin` in Claude Code and delete created game projects. Other files in the plugin folder are not touched.
FAQ
How do I install LittleJS AI in Claude Code?
Run `/plugin marketplace add KilledByAPixel/LittleJS-AI`, then `/plugin install littlejs@littlejs-ai`.
Do I need a server or npm to run the game?
No. The project with the engine opens straight from `file://`, with no server and no `npm install`.
Which skills are in the plugin?
Five: `littlejs-conventions`, `new-littlejs-game`, `littlejs-api`, `atlas-shape-art` and `custom-level-editor`.
Can I make a game without code?
The author has a separate LittleJS GPT assistant in ChatGPT, linked in the README.
Where can I see finished games?
In LittleJS Arcade: it holds more than 50 finished games built with these tools.
Discussion
No questions or reviews yet.
Related
PluginsA plugin of 24 Claude Code skills for AI apps on Next.js, AI SDK 7, shadcn/ui and pgvector, with in-browser UI checks
22 game plugins, each with an agent, a command and a skill: Godot, Unity, Unreal, netcode, shaders, playtests and optimization
Nine plugins for Claude Code with 51 skills and 2 agents: a single workflow from a rough idea to a reviewed pull request.
A plugin that builds browser 2D and 3D games from an idea: pixel art, audio, Playwright checks and publishing in one pipeline.
Claude Code Skills and Agents
Claude Code Skills & Agents
A Claude Code plugin bundling skills and sub-agents: deep research, image generation, GitHub work, code review and model switching
A Claude Code marketplace of 19 plugins and 76 skills for frontend, backend, DevOps and security, with a skill chain command
README in short
The repository holds starter templates, modules, docs and prompts for working with AI. Finished games live in LittleJS Arcade.