dev-gom/claude-code-marketplace/unity-ui-selector

Claude Code and agent skill by dev-gom/claude-code-marketplace

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Guides selection between UGUI and UI Toolkit for projects. Use when choosing UI framework or migrating UI systems.

Install

npx vskill@latest install dev-gom/claude-code-marketplace/unity-ui-selector

SKILL.md

The same SKILL.md was published earlier as majiayu000/claude-skill-registry/unity-ui-selector.

Unity UI System Selector

Helps you choose the appropriate UI system for your Unity project and provides implementation guidance for both UGUI and UI Toolkit.

Two UI Systems

UGUI (Legacy) - GameObject-based (2014). Mature, works on all Unity versions, large community. Weaker: Complex UI performance, limited styling, no live reload.

UI Toolkit (Modern) - Retained mode, web-inspired UXML/USS (2021.2+). Better performance, live reload, data-binding. Weaker: Requires 2021.2+, smaller community, limited 3D world-space UI.

Decision Framework

Use UGUI if:

  • Unity < 2021.2
  • Simple UI (menus, HUD)
  • 3D world-space UI needed
  • Team knows UGUI well / tight deadline
  • Legacy project

Use UI Toolkit if:

  • Unity 2021.2+ and new project (future-proof)
  • Complex/data-driven UI (inventory, skill trees)
  • Editor tools (inspectors, windows) - strongly recommended
  • Web dev background (HTML/CSS)
  • Large-scale UI (MMO, strategy games)

When in doubt: For new projects on Unity 2021.2+, UI Toolkit is recommended.

Comparison

FeatureUGUIUI Toolkit
Version4.6+2021.2+
PerformanceSimple UIsAll UIs
StylingInspectorCSS-like USS
LayoutManual/GroupsFlexbox-like
Editor ToolsGoodExcellent
Runtime UIExcellentGood
3D World UIExcellentLimited

Migration

See migration-guide.md for UGUI → UI Toolkit migration strategy (3-4 months for medium projects).

UI System Support Matrix

Unity VersionUGUIUI Toolkit (Editor)UI Toolkit (Runtime)
2019.4 LTS✅ Full✅ Basic❌ No
2020.3 LTS✅ Full✅ Good⚠️ Experimental
2021.3 LTS✅ Full✅ Excellent✅ Production
2022.3 LTS+✅ Full✅ Primary✅ Full

When to Use vs Other Components

Use this Skill when: Choosing between UGUI and UI Toolkit, understanding UI system trade-offs, or planning UI migration

Use @unity-scripter agent when: Implementing UI components, writing custom UI scripts, or converting UI code

Use @unity-architect agent when: Designing complex UI architecture, planning UI data flow, or structuring large-scale UI systems

Use /unity:new-script command when: Generating Editor scripts with UI Toolkit or UGUI templates

Related Skills

  • unity-uitoolkit: Assists with UI Toolkit implementation (UXML, USS, VisualElement API)
  • unity-template-generator: Generates Editor scripts using selected UI system
  • unity-script-validator: Validates UI code patterns

Security

  • Security scanPassed, 100 of 100Pattern checks on the skill's files.
  • Model reviewNot runA model review is scheduled for the next rescan.

See the full security report

Quality evaluation

  • Task evaluationNot runNo evaluation yet. Run one in Skill Studio.

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Source

Popularity

Repository stars
97
Repository forks
11
7-day trend score
0

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