Use when Codex is building or iterating on a web game (HTML/JS) and needs a reliable development + testing loop: implement small changes, run a Playwright-based test script with short input bursts and intentional pauses, inspect screenshots/text, and review console errors with render_game_to_text.
Install
npx skills add openai/skills --skill develop-web-gamenpx skills add openai/skills --skill develop-web-game -a claude-code -gnpx skills add openai/skills --skill develop-web-game -a codex -ggemini skills install https://github.com/openai/skills.git --path skills/.curated/develop-web-gamegh skill install openai/skills develop-web-gamegit clone --depth 1 https://github.com/openai/skills /tmp/openai__skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/openai__skills/skills/.curated/develop-web-game ~/.claude/skills/develop-web-game # Claude Code
cp -R /tmp/openai__skills/skills/.curated/develop-web-game ~/.agents/skills/develop-web-game # Codex, Cursor, Gemini CLI, Copilot, OpenCode