Unity-Technologies

Unity IMGUI (Immediate Mode GUI) expert for legacy editor tools using OnGUI/immediate mode. Generates and modifies IMGUI EditorWindows, custom Inspectors, PropertyDrawers, and scripts with IMGUI code (OnGUI, OnInspectorGUI). Use when maintaining existing IMGUI editor code or when user explicitly requests IMGUI/OnGUI.

Unity uGUI (Canvas-based) UI expert. Understands, edits, and generates Canvas hierarchies, RectTransforms, Layout Groups, and prefab UI. Use for requests involving Canvas, uGUI, RectTransform, or .prefab UI files.

Unity UI Toolkit expert for Unity 6.0+. Understands, edits, and generates UXML and USS files with flex-based layouts. Use for requests involving .uxml, .uss, UI Toolkit, UIElements, UIDocument, UI runtime binding, Custom UI Elements, Manipulators or PanelSettings.

Covers TextMeshPro font stacks, dynamic fallback atlases, padding and sampling ratios, SDF16, AutoSize discipline, worldspace vs UGUI, and Memory Profiler font-data capture. Use when the user mentions TextMeshPro, Text Mesh Pro, TMP (TextMeshPro), font asset, dynamic atlas, TMP localization, CJK (Chinese, Japanese, Korean) fonts, font alignment across scripts, mixed western and eastern fonts, text rendering performance, profiler markers related to text generation or glyph rasterization, font fallback strategy, font normalization, multilingual or localized text rendering, SDF font quality, or text-related memory issues—not for UI Toolkit layout (unity-ui-toolkit) or non-TMP uGUI (unity-ui).

Add and configure in-game voice chat and text chat for Unity multiplayer games using Unity Vivox. Covers microphone setup and mic permissions on Android/iOS, voice activity detection (VAD) tuning, voice volume and mute controls in a settings UI (VoiceVadMinimumVolume, mic slider, mute button, speaking indicator), proximity/3D spatial voice for FPS/co-op games, team/party/lobby/guild voice channels, push-to-talk, muting self and other players, whisper/direct messages, in-game text chat, and Vivox SDK init + Unity Authentication sign-in. Use when the user asks to add voice chat, voice comms, microphone/mic support, a voice-chat settings UI, mute button, VAD threshold, push-to-talk, proximity or spatial voice, team voice, party chat, lobby chat, direct messages, or mentions Vivox, VivoxService, com.unity.services.vivox, JoinGroupChannelAsync, JoinPositionalChannelAsync, LoginAsync, or migrating from legacy Vivox (Client.Instance / LoginSession / AccountId).

Analyze Sprite textures and output a 3x3 grid representation based on color matching. Segments a Sprite into a 3x3 grid, identifies the majority color of the center cell, and outputs a text pattern showing which cells match the center color. Use when analyzing sprite patterns, documenting sprite structure, or describing sprite color distribution.

Creates a Tile Palette asset. Use when the user wants to organize tiles for 2D level design or create a new Tile Palette from scratch. The user can specify the Grid layout, eg. Rectangular, Hexagonal, Isometric.

Manage SpriteAtlas using prebuild pipeline with IPreprocessBuildWithReport (DEFAULT approach). Use it to configure master atlases, variant atlases, texture settings, packing settings, and platform-specific configurations. Use when the user asks about creating sprite atlases, optimizing sprites, configuring atlas settings, adding sprites to atlases, creating variant atlases, implementing automated atlas generation, or runtime sprite atlas access. Always use prebuild approach unless user explicitly requests manual authoring.

Plans, executes, and troubleshoots Unity projects moving from the Built-in Render Pipeline (BiRP/BIRP/Built-in RP) to the Universal Render Pipeline (URP). Use when the user asks to upgrade, convert, switch, or migrate a project, scene, material, or shader to URP/Universal Render Pipeline; fix pink or magenta materials after URP; convert Built-in materials/shaders; move a 2D project to URP 2D; review lighting, quality, post-processing, baked lightmaps, or reflection probes after URP; or diagnose visual problems after a render-pipeline migration.

Scans the scene and audio assets to appropriately route Audio Sources into existing Audio Mixer Groups, classifying each source by what it plays. Use when the user asks about cleaning up mixer assignments, routing audio through a mixer, or which group a sound belongs in. Creating mixers and groups, and setting volumes, are not automated — the skill inventories what exists and asks the user to add anything missing.

Sets up, configures, and debugs URP post-processing effects using the Volume framework. Use when the user asks about bloom, tonemapping, color adjustments, depth of field, vignette, motion blur, or other Volume overrides in a URP project.

Use when starting a brand-new Unity game or project from scratch — "make/start/create a new game", "bootstrap a Unity project", "I want to build a <genre> game", "scaffold/prototype a game", game jam, greenfield, blank project, project setup. A guided flow that gathers the concept, target platforms, and monetization, installs the Editor in the background while it asks, then creates the project and source control and installs packages — delegating the mechanics to the unity-cli and unity-package-management skills and handing off monetization to the dedicated skills. Does not scaffold gameplay code.

Sets up, diagnoses, and fixes pixel perfect 2D rendering in Unity projects. Use when working on any retro-style or pixel art 2D game.

Build and operate a live game using Unity Services. Use when the user needs to implement, connect, or debug backend-driven features — battle passes, achievements, player progression, cloud saves, leaderboards, matchmaking, virtual economies, server-authoritative logic, anti-cheat, player accounts and authentication, remote configuration, feature flags, A/B testing, analytics, or cloud resource deployment. Triggers on live-ops, live service, backend, server authority, cloud code, cloud save, remote config, player data, retention, monetization loop, season pass, ranking, multiplayer sessions, lobbies, or any Unity Services integration.

Optimizes Unity 6 audio memory, CPU cost, and playback quality through correct import settings and mixer configuration. Use when the user wants to reduce audio memory usage, choose the right Load Type for short clips versus music versus ambient beds, configure platform-appropriate sample rates and codecs, force 3D audio to mono, or reduce AudioMixer CPU cost from deep group trees or effects running on silent paths.

Edits Unity sprite properties by generating C# editor scripts using ISpriteEditorDataProvider APIs. Handles sprite rectangles, borders, pivots, outlines, and slicing operations (automatic, grid, isometric). Use when working with sprite assets, sprite sheets, texture atlases, or sprite slicing.

Sets up and configures Unity Localization, including locales, String/Asset Tables, CJK font support, and Addressables workflows. Use when the user wants to add languages to a project, translate UI text, support Asian (CJK) languages with TMP fonts, or mentions i18n, l10n, multilingual support, or making a game support multiple languages.

Optimizes Unity 6 WebGL and WebGPU builds for smaller download size, faster initial load, and efficient browser runtime performance. Use when the user's web build is too large, stutters in a specific browser, consumes excessive battery, needs CDN/server compression configured, or needs guidance on resource stripping, shader variant reduction, KTX textures, quality settings, or web profiling.

Use when interacting with Unity CLI from the terminal, or to control a running/connected Unity Editor from the command line — create or modify GameObjects, edit scenes and assets, inspect the hierarchy, and run C# in a live Editor instead of hand-editing scene or asset files. Also install, upgrade or uninstall editors, create, list or open projects, manage modules, manage licenses, check auth status, read logs, browse Unity releases, build/test projects, configure the Unity MCP server for AI agents, or run any other Unity CLI operation. For a guided idea-to-running-project flow for a brand-new game, use the new-unity-project skill instead.