# melonJS Game Engine

Routes melonJS game engine tasks to the right specialist skill.

- Repository: https://github.com/melonjs/melonJS (6430 stars)
- Category: Engineering
- License: MIT
- Last updated: 2026-11-01
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add melonjs/melonJS --skill melonjs -g -a claude-code -y`
Codex: `npx skills add melonjs/melonJS --skill melonjs -g -a codex -y`
Cursor: `npx skills add melonjs/melonJS --skill melonjs -g -a cursor -y`
Gemini CLI: `npx skills add melonjs/melonJS --skill melonjs -g -a gemini-cli -y`
Claude Code plugin marketplace: `/plugin marketplace add melonjs/melonJS`

## Description

Use this skill FIRST for any melonJS task; it routes to the right specialised skill and lists the companion packages. melonJS is an open-source 2D, 2.5D and 3D HTML5 game engine running on WebGPU, WebGL 2 or Canvas. Covers Application setup, the scene graph, renderables, sprites, tilemaps, physics, audio, particles, shaders, and the 3D tier, perspective cameras, meshes and glTF scenes. Triggers on: melonjs, melonJS, me.game, Application, app.init, app.world, Renderable, Sprite, Stage, state.change, Camera2d, Camera3d, Mesh, tilemap, Tiled, TMX, ParticleEmitter, ShaderEffect, how do I make a game, HTML5 game engine.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# melonJS

Entry point for the melonJS skill collection. melonJS is an open-source HTML5
game engine for indie developers, covering 2D, 2.5D and 3D, perspective and
orthogonal cameras, GPU-accelerated tilemap rendering, post-processing effects,
custom shaders, 3D meshes, polygon-accurate physics and modern Tiled workflows.
It runs on WebGPU, WebGL 2 or Canvas with automatic fallback, and has no runtime
dependencies.

## How to use this skill

1. Find the specialised skill below that matches the task and follow it.
2. If the task involves anything 3D, read `melonjs-3d` **first**, melonJS's
   coordinate conventions are the inverse of OpenGL's, so untutored 3D instincts
   are backwards.
3. If you are writing melonJS from prior knowledge rather than from the current
   docs, read `melonjs-20-migration`, most published melonJS material predates
   20.0 and its bootstrap no longer exists.
4. If none of them covers the task, use the escape hatch below rather than
   guessing at an API.

## Skill router

The rest: https://github.com/melonjs/melonJS/blob/HEAD/packages/melonjs/skills/melonjs/SKILL.md