---
title: "Jelly UI skin: API"
package: "@phaser-ae/ui-skin-jelly"
tier: Free
version: 3.0.0-2
released: 2026-10-18
updated: 2026-10-21
description: "The classic two-tone mobile button for every ui widget, a face cut across by a gloss band, outlined in its own hue, on a lip, with a debossed caption."
url: https://phaser.io/packs/ui-skin-jelly/api
site: Phaser - https://phaser.io
---

# Jelly UI skin: API

`@phaser-ae/ui-skin-jelly` — Jelly game UI: two-tone glossy buttons with a dark outline in their own hue, a lip they press into, glints and debossed captions.

## The pack

### `uiSkinJelly`

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

Pack `ui-skin-jelly`: the jelly game UI skin — a two-tone face cut across by a gloss band, a dark outline in the colour, a lip, glints, and a debossed caption. Registers the theme 'jelly' (made with these options:
its main colour, surface colour, corners, lip, role colours and extra colours) for `game.ui.theme = 'jelly'`,
and the material, so `game.skins.make({ material: 'jelly', … })` makes more. Requires `ui-skins`.

## Constants

### `UI_SKIN_JELLY`

```ts
const UI_SKIN_JELLY: UiSkinMaterialDef
```

The jelly material: a two-tone face cut across by a gloss band, a dark outline in the colour, a lip, glints, and a debossed caption. 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`.