gamefacelisted

Coherent Gameface (Cohtml) domain knowledge for the game-UI middleware that renders HTML/CSS/JS inside games (Cities: Skylines II and many others). Use when writing or debugging UI that runs in a Gameface view, when HTML/CSS/JS behaves differently in the game than in a browser, when checking whether a web feature exists in a game's Cohtml version, or when working with data-bind-* attributes or the engine JS API. Also the domain reference for skills that drive a Gameface UI via the game_* tools.
CitiesSkylinesModding/agents-plugins · ★ 1 · Web & Frontend · score 67

Install: claude install-skill CitiesSkylinesModding/agents-plugins

# Gameface Gameface renders game UI from HTML/CSS/JS. It is powered by Cohtml (the HTML engine) and Renoir (the rendering engine), proprietary technology that is not WebKit, Chromium, or Gecko, and not a WebView. JavaScript runs on V8. Gameface implements a deliberate subset of HTML5/CSS3 chosen for game-UI performance: an unsupported HTML element is not an error, it lays out as a generic unstyled flex box with no semantics, and unsupported CSS is silently ignored. (The older Coherent UI product was Chromium-based; search results about it do not describe Gameface.) This skill was written against docs v3.0.3.1 and verified against Cities: Skylines II (CS2), the worked example throughout. ## The map and the territory The docs are the map; the running game is the territory. Three rules keep them straight: 1. **The docs describe the latest Gameface only.** Support tables carry no "since version" annotations. A YES in today's docs is an upper bound, not a fact about your game. 2. **Version-gate every feature claim.** A game embeds a Cohtml version frozen at ship time (CS2: 1.64.0.7, while the docs describe 3.0.x). A feature exists in the game iff the changelog introduced it at or below the game's version. [references/version-gating.md](references/version-gating.md) has the lookup procedure, a baked version-to-feature timeline, and the list of features that never existed at all. 3. **Probe the territory.** Two games on the same Cohtml version can still differ: per-game