# Mengto Build Mobile Threejs Games

> Use when building, tuning, or QA-testing a Three.js game for mobile web: touch movement and actions, target selection, touch inventory, safe areas, portrait/landscape HUD, battery/performance budgets, and real-device browser verification.

- Skill: `oimiragieo/mengto-build-mobile-threejs-games` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds add oimiragieo/mengto-build-mobile-threejs-games`
- Raw SKILL.md: https://api.skillmd.com/api/skills/oimiragieo/mengto-build-mobile-threejs-games/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: oimiragieo (https://skillmd.com/u/oimiragieo)
- Updated: 2026-09-08
- Page: https://skillmd.com/skills/oimiragieo/mengto-build-mobile-threejs-games

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# Build Mobile Three.js Games

Treat mobile as a primary control and performance surface.

## Controls

Provide a clear movement control, reachable primary actions, target selection, cancel/reset paths, and non-drag alternatives for inventory. Keep controls out of unsafe areas, avoid overlapping action zones, and show feedback for held, unavailable, and queued actions.

## Responsive HUD

Design for representative portrait and landscape viewports. Keep vital status, target data, inventory, tooltips, and dialogs legible without covering the playfield. Support orientation changes without resetting gameplay state.

## Performance and QA

Use device-appropriate quality defaults and adaptive decorative effects. Test touch targets, multi-touch, long sessions, audio unlock, pause/background return, reduced motion, low-end quality, and actual mobile-size viewports in the repository-approved browser.