Skill UI

A comprehensive skill guide for building complex, feature-rich web games and game engines using modern web technologies like HTML5, Canvas, WebGL, and JavaScript. Covers full 2D and 3D game development workflows, including implementing the game loop, physics simulation (collision detection, Newtonian physics), handling diverse input methods (touch, gamepad), managing assets, and integrating multiplayer features via WebRTC. Ideal for creating everything from simple platformers to advanced 3D simulations.

This skill provides expert capabilities for professional HTML development, emphasizing semantic markup, WCAG accessibility, and modern HTML5 standards. Use it to build structurally sound, accessible, and responsive web pages, incorporating complex forms, multimedia (SVG, Canvas), and adhering to industry best practices.

A comprehensive guide and workflow for publishing and managing game builds on itch.io using the official 'butler' command-line interface. This skill covers everything from setting up the project page and logging in to pushing portable builds to specific channels (Windows, macOS, Linux, HTML5). It ensures proper versioning, handles differential uploads, and guides developers through best practices for deployment.

This expert skill enables professional HTML development focusing on semantic markup, accessibility, and HTML5 standards. It assists in building web pages, forms, and interactive content while ensuring responsive design patterns and compliance with modern web standards. Ideal for creating accessible, standards-compliant web structures and troubleshooting validation issues.

This skill covers web browser game development, including framework selection (Phaser, Three.js, Babylon.js), hybrid DOM+canvas architectures, WebGPU adoption, performance optimization, PWA implementation, and audio handling. Use it for building HTML5/WebGL games or selecting browser runtimes.