Drop-in design system for Unity 6 UI Toolkit (UIDocument + PanelRenderer, UXML + USS): tokens, fx shader material support, 42 components, 121 icons, mobile-responsive, dark-themed. One stylesheet, zero dependencies. Battle-tested in a shipping cross-play game.
2 files for GitHub Copilot, Codex and OpenCode: unity-ui-toolkit-design-system copilot-instructions.md, unity-ui-toolkit-design-system AGENTS.md — 3,593 tokens loaded in every session.
.github/copilot-instructions.md A 258 tok AGENTS.md A 3,335 tok These files are sinanata/unity-ui-toolkit-design-system's own configuration — they tell GitHub Copilot, Codex and OpenCode how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.