---
title: Quartz UI overview and availability
description: What the private preview does and where to begin.
status: approved
visibility: public
sourceRevision: e7ab5dcc0069ade3393cc0e033e4541a78eaae3b
reviewedAt: 2026-09-22
---

# Quartz UI overview and availability

Quartz UI renders project-owned HTML, CSS and JavaScript inside Unreal Engine and connects the page to native game code through explicit state, event and request contracts. A retained UI shell belongs to an exact local player. Blueprint and C++ publish presentation data; native game code remains responsible for gameplay decisions.

Quartz UI is a **private preview**. The installation guide is for developers who already have authorized repository access. The inspected descriptor calls the plugin `QuartzUI`, version `0.57.0-dev`, with `IsBetaVersion=true`. Use the public name **Quartz UI** in prose and keep exact identifiers in paths and code. No public download, purchase, license-key or activation procedure is established by this guide.

Start with [installation and first rendered UI](https://betterbuilt.games/docs/quartz-ui/installation), then consult the source-defined integration surfaces below. Read [debugging](https://betterbuilt.games/docs/quartz-ui/debugging) before using DevTools and [version notes](https://betterbuilt.games/docs/quartz-ui/versions) before comparing results from different checkouts.

## What the first run demonstrates

The private standalone host opens an engine Entry map and automatically renders the included reference menu during Play In Editor (PIE). Expected controls include **PLAY MULTIPLAYER**, **SERVERS** and **SHOP**. The native log reports protocol and application readiness. The page is served from `https://reference.quartzui.test/index.html` through the plugin resource loader; it is not a public website or a DNS setup step.

The reference is a frozen compatibility fixture with prebuilt web assets. It demonstrates rendering and bridge startup. It does not provide a multiplayer backend, inventory service or a game’s gameplay providers. An optional demo request can report `bridge.endpoint-not-found` even while this fixture renders successfully.

## Choose the right integration surface

| Need | Source-defined surface |
| --- | --- |
| One retained game UI per local player | `UQuartzUISubsystem` shell, `UQuartzUIBlueprintLibrary`, `FQuartzUI` |
| Values, notifications and named actions | Simple Blueprint nodes and the exact-player C++ facade |
| Typed project data and commands | `UQuartzUIProvider`, provider sets, project contracts and `UQuartzUITypedEndpoint` |
| An embedded or additional view | `UQuartzUIWidget` / `UQuartzUIView`; advanced ownership and lifecycle work |
| Web state and requests | `Resources/Client/quartzui.mjs` |
| React state subscription | `Resources/Client/react.mjs`; the consuming app supplies React |

A successful browser preview alone does not establish Unreal input, bridge readiness or packaged operation. The installation recipe uses earlier independent host execution evidence. A subsequent independent documentation review verified source and reused-checkout integrity; it did not repeat the Editor build or render.

## Availability and evidence boundary

The reference-host baseline is `91fd772c282098157c4e7cded0263844f076e9fb`, pinned to plugin `933db5171161ac5966e3b9bca3fd3a965f5399cc`. Earlier independent testing passed its build, resource audit, reference rendering and readiness, but native DevTools attachment failed. Plugin `e7ab5dcc0069ade3393cc0e033e4541a78eaae3b` is a separate repair candidate with scoped selector evidence; this documentation does not present it as the reference host’s pin or a release.

The independent documentation review found that the custom integration snippets lack a complete app-registration, frontend-build and observable native-action fixture. They have not been compiled or executed together in Unreal. The reference menu remains the documented first-render target. Packaging, clean-machine provisioning and broader platform/engine support are unverified; see [version notes](https://betterbuilt.games/docs/quartz-ui/versions).

Canonical HTML: https://betterbuilt.games/docs/quartz-ui