Find the root cause of a gameplay bug, crash, regression, desync or odd behaviour and apply the smallest correct fix with regression coverage. Use when the user reports a bug, pastes a log, stack trace or repro steps, or asks "why does X happen". Never fabricates a root cause - labels hypotheses when reproduction is impossible.
Install
npx skills add ThiagoFdaSLopes/game-dev-skills --skill game-debugnpx skills add ThiagoFdaSLopes/game-dev-skills --skill game-debug -a claude-code -gnpx skills add ThiagoFdaSLopes/game-dev-skills --skill game-debug -a codex -ggemini skills install https://github.com/ThiagoFdaSLopes/game-dev-skills.git --path skills/game-debuggh skill install ThiagoFdaSLopes/game-dev-skills game-debuggit clone --depth 1 https://github.com/ThiagoFdaSLopes/game-dev-skills /tmp/ThiagoFdaSLopes__game-dev-skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/ThiagoFdaSLopes__game-dev-skills/skills/game-debug ~/.claude/skills/game-debug # Claude Code
cp -R /tmp/ThiagoFdaSLopes__game-dev-skills/skills/game-debug ~/.agents/skills/game-debug # Codex, Cursor, Gemini CLI, Copilot, OpenCode