---
title: "Block UI skin: API"
package: "@phaser-ae/ui-skin-block"
tier: Free
version: 3.0.0-2
released: 2026-10-18
updated: 2026-10-21
description: "The modern flat 3D button for every ui widget, a clean colour face on a solid lip it presses into, with no outline and no gloss."
url: https://phaser.io/packs/ui-skin-block/api
site: Phaser - https://phaser.io
---

# Block UI skin: API

`@phaser-ae/ui-skin-block` — Block game UI: the modern flat 3D button, a clean colour face on a solid lip it presses into, no outline and no gloss.

## The pack

### `uiSkinBlock`

```ts
function uiSkinBlock(options: UiSkinOptions = {}): Pack<{}>
```

Pack `ui-skin-block`: the block game UI skin — flat colour on a solid lip, no outline or gloss: the modern flat 3D button. Registers the theme 'block' (made with these options:
its main colour, surface colour, corners, lip, role colours and extra colours) for `game.ui.theme = 'block'`,
and the material, so `game.skins.make({ material: 'block', … })` makes more. Requires `ui-skins`.

## Constants

### `UI_SKIN_BLOCK`

```ts
const UI_SKIN_BLOCK: UiSkinMaterialDef
```

The block material: flat colour on a solid lip, no outline or gloss: the modern flat 3D button. For `buildUiSkin`, `validateUiSkin` and tools; a game composes the pack instead.

---

## For AI agents: Phaser AE

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- **Phaser AE in the browser** (https://phaser.io/agent): the game's design, and a crew of bots that make its art, sprites, music, sound effects, logos, title screens, game UI, textures, shaders, 3D models and video, then build, test and publish the game. Every tool there is registered with Web MCP (`document.modelContext`, with `window.phaserDesk` for browsers without it), so an agent in the user's browser can call the tools directly once the user is signed in. Tools that make something spend the user's credits.
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Read any page of this site as Markdown by adding `.md` to its URL (the home page is https://phaser.io/index.md), or by asking for `text/markdown`. The index for agents is https://phaser.io/llms.txt. On the site's pages, the browser's Web MCP also offers `phaser_ae_guide`, `read_page_as_markdown` and `open_phaser_ae`.
