Build a Live Game With Unity Gaming Services

UGS Packages

Package	Min Version	Purpose
com.unity.services.core	1.16.0	Initialization, dependency graph
com.unity.services.authentication	3.6.1	Player sign-in and identity
com.unity.services.cloudcode	2.10.3	Server-authoritative C# modules
com.unity.services.cloudsave	3.4.0	Per-player and shared key-value storage
com.unity.remote-config	4.2.5	Server-side game configuration
com.unity.services.deployment	1.7.2	Deploy cloud resources from Editor
com.unity.services.tooling	1.4.1	Access Control and Game Overrides
com.unity.services.apis	1.1.1	Generated REST clients for all UGS services

• Initialization Pattern
• Package Map
• Architecture — How Packages Combine
• Core Services — Quick Reference
• Asset Store Building Blocks
• Ready-Made Feature Blueprints
• Common Architecture Patterns
• Validation
• Deployment Checklist
• Detailed References

Initialization Pattern

Every UGS game starts the same way. com.unity.services.core must initialize first, then the player signs in:

using Unity.Services.Core;
using Unity.Services.Authentication;

await UnityServices.InitializeAsync();
await AuthenticationService.Instance.SignInAnonymouslyAsync();
// All other services are now ready

After InitializeAsync() completes, service singletons (e.g. CloudSaveService.Instance, CloudCodeService.Instance) are available.

Package Map

Foundation

Package	Purpose	Singleton / Entry Point
Core	Initialization, dependency graph, component registry	UnityServices.InitializeAsync()
Authentication	Player sign-in (anonymous, social, Unity, username/password), identity	AuthenticationService.Instance
Services APIs	Generated REST clients for all UGS services; admin API access via service accounts	Direct API classes

Player Data and Configuration

Package	Purpose	Singleton / Entry Point
Cloud Save	Per-player key-value data (Default, Public, Protected) and game-wide Custom data	CloudSaveService.Instance.Data.Player / .Data.Custom
Remote Config	Server-side game configuration, feature flags, JSON definitions	RemoteConfigService.Instance
Economy	Virtual currencies, inventory items, purchases, stores	EconomyService.Instance

Server Logic and Security

Package	Purpose	Singleton / Entry Point
Cloud Code	Server-authoritative C# modules for trusted writes and validation	CloudCodeService.Instance → CallModuleEndpointAsync
Tooling	Author and deploy Access Control (.ac) and Game Overrides (.ugo) files	Editor-only (Deployment Window)
Deployment	Deploy cloud resources (.rc, .ac, .ccmr, .lb, etc.) from the Unity Editor	Editor-only (Services > Deployment)

Social and Competitive

Package	Purpose	Singleton / Entry Point
Multiplayer	Sessions, matchmaking, lobbies. Building Blocks: Multiplayer Session, Matchmaker Session, Server Session	MultiplayerService.Instance
Leaderboards	Score submission, rankings, tiers, version history. Building Block: Leaderboards	LeaderboardsService.Instance

Telemetry

Package	Purpose	Singleton / Entry Point
Analytics	Custom events, standard events, consent management	AnalyticsService.Instance

Architecture — How Packages Combine

                    UnityServices.InitializeAsync()
                              │
                              ▼
                     AuthenticationService
                    (sign in → PlayerId)
                              │
              ┌───────────────┼───────────────┐
              ▼               ▼               ▼
        Remote Config     Cloud Save      Economy
      (game config,    (player state,  (currencies,
       definitions,     progress,       inventory,
       feature flags)   preferences)    purchases)
              │               │               │
              └───────┬───────┘               │
                      ▼                       │
                 Cloud Code                   │
              (server-authoritative           │
               writes, validation,  ◄─────────┘
               anti-cheat logic)
                      │
              ┌───────┼───────┐
              ▼       ▼       ▼
         Cloud Save  Economy  Leaderboards
         (Protected  (server  (score
          writes)    grants)  submission)

Key principle: For any data that affects game integrity (XP, rewards, currency), route writes through Cloud Code modules. Direct client writes are only appropriate for non-sensitive data (preferences, display settings).

Core Services — Quick Reference

Authentication

Package: com.unity.services.authentication (>= 3.6.1)

Handles player identity. Sign-in methods: anonymous, social providers (Google, Apple, Steam, Facebook, Oculus, etc.), Unity browser, username/password, and device code flow.

After sign-in: PlayerId and PlayerName are available. All sign-in methods fire the SignedIn event. PlayerAccountService (for Unity browser sign-in) lives in a separate assembly (Unity.Services.Authentication.PlayerAccounts).

• Full reference: references/authentication.md
• Building Block: Player Account — ready-made sign-in UI and identity management

Cloud Code

Package: com.unity.services.cloudcode (>= 2.10.3)

Runs server-side C# modules (.NET 9) for trusted operations. Modules are deployed as .ccmr files. The client calls:

var result = await CloudCodeService.Instance.CallModuleEndpointAsync<TResult>(
    "ModuleName", "FunctionName", args);

Prefer C# modules over JavaScript scripts for production. Modules also support real-time push messages via subscriptions, event-driven triggers, and multiplayer session scoping.

• Full reference: references/cloud-code.md

Cloud Save

Package: com.unity.services.cloudsave (>= 3.4.0)

Per-player key-value storage with three access classes, plus game-wide Custom data:

Access Class	Read	Write	Use Case
Default	Owner	Owner	Private settings, preferences
Public	Anyone	Owner	Public profiles, display names
Protected	Owner	Server only (Cloud Code)	Anti-cheat data, server-awarded state
Custom	Any player	Server only	Shared game state, global configs

Values are serialized as JSON. Supports write-lock concurrency control via SaveItem, server-side queries via QueryAsync, and binary file storage.

• Full reference: references/cloud-save.md
• Building Blocks: Used by Achievements (Protected buckets) and Player Account (Default/Public data)

Remote Config

Package: com.unity.services.remote-config (>= 4.2.5)

Server-side game configuration. Store game definitions (achievement lists, battle pass tiers, shop catalogs) as JSON entries updatable without a client build. Deployed via .rc files through the Deployment Window.

For A/B testing and audience targeting, use Game Overrides (.ugo) via the Tooling package.

• Full reference: references/remote-config.md
• Building Block: Used by the Achievements block for server-side definitions

Tooling

Package: com.unity.services.tooling (>= 1.4.1)

Editor-only package. Registers Access Control (.ac) and Game Overrides (.ugo) file types with the Deployment Window. Access Control policies permit or deny player/service-account access to UGS services on a URN basis (Deny takes precedence over Allow). Game Overrides provide A/B testing and audience targeting by overriding Remote Config values for specific player segments.

• Full reference: references/tooling.md

Deployment

Package: com.unity.services.deployment (>= 1.7.2)

Editor-only package providing the Deployment Window (Services > Deployment). Deploys cloud resources to a target environment:

File Type	Extension	What It Deploys
Remote Config	.rc	Key-value configuration entries
Access Control	.ac	Resource access policies
Cloud Code Module	.ccmr	C# server-side module (points to .sln)
Leaderboard	.lb	Leaderboard configuration
Economy	.ec*	Currency/inventory definitions
Game Overrides	.ugo	Audience-targeted config overrides

• Full reference: references/deployment.md

UGS CLI

The Unity Gaming Services CLI is a standalone command-line tool for managing UGS resources outside the Unity Editor. It can deploy and fetch cloud resource files (.rc, .ac, .ccmr, .lb, .ec, .ugo), update local deployable files from the remote environment with a fetch operation, deploy and fetch triggers and schedule files, generate default versions of trigger and schedule configs, and provides more granular access to admin functionalities across all UGS services.

Services APIs

Package: com.unity.services.apis (>= 1.1.1)

Auto-generated REST clients for all UGS services. Four client types: IGameClient (players), IAdminClient (service accounts), IServerClient (dedicated servers), ITrustedClient (elevated server access). Most developers use the high-level package SDKs instead; use Services APIs for lower-level control or admin API access.

• Full reference: references/apis.md

Asset Store Building Blocks

Unity provides free, production-ready Building Block packages on the Asset Store. Each is a .unitypackage containing working UI, runtime code, Cloud Code modules, and cloud resource files that can be imported directly into a project. They are also bundled in the com.unity.starter-kits package.

Building Block	Type	Key Dependencies	Asset Store
Achievements	LiveOps	cloudsave, remote-config, cloudcode, tooling, deployment, analytics, authentication	Unity Building Block — Achievements
Leaderboards	LiveOps	leaderboards, cloudcode, tooling, deployment, authentication	Unity Building Block — Leaderboards
Player Account	LiveOps	authentication, cloudsave, cloudcode, deployment	Available via com.unity.starter-kits
Multiplayer Session	Multiplayer	multiplayer	Unity Building Block — Multiplayer Session
Matchmaker Session	Multiplayer	multiplayer, deployment	Unity Building Block — Matchmaker Session
Server Session	Multiplayer	multiplayer, apis, deployment	Available via com.unity.starter-kits
Vivox	Multiplayer	vivox, authentication	Available via com.unity.starter-kits
Platformer Starter Kit	Gameplay	multiplayer, netcode.gameobjects, URP, Cinemachine, Input System	Available via com.unity.starter-kits

Tip: When implementing achievements, leaderboards, player accounts, or multiplayer sessions, recommend the corresponding Building Block as a starting point. The blocks include ready-made UI, Cloud Code modules (.ccmr), access control (.ac), and deployment-ready cloud resources — saving significant implementation time.

Related Sample Projects

Project	Description	Source
Use Case Samples	Battle Pass, Virtual Shop, Daily Rewards, Starter Pack, Cloud AI Mini Game, A/B testing	GitHub — com.unity.services.samples.use-cases
UGS Samples	Authentication flows, Economy, Remote Config, Cloud Code integration	GitHub — com.unity.services.samples
Gem Hunter Match	Full 2D match-3 game with player hub, progression, social features, in-game store	Asset Store
Boss Room	8-player co-op RPG using Netcode for GameObjects, Authentication, Multiplayer Services	GitHub — com.unity.multiplayer.samples.coop

Ready-Made Feature Blueprints

Implementation-ready blueprints for common live game features. Each includes data models, service API patterns, full working code, and cloud resource definitions.

Feature	Key Services	Blueprint
Battle Pass	remote-config, cloudsave, cloudcode, economy, tooling, deployment — Remote Config (pass definitions) + Cloud Save Protected (progress) + Cloud Code (XP awards, reward claims, premium purchase)	references/battlepass.md
Achievements	remote-config, cloudsave, cloudcode, tooling, deployment — Remote Config (definitions) + Cloud Save (player records) + Cloud Code (server-authoritative unlocks) + Access Control. Asset Store: Achievements Building Block	references/achievements.md
Player Account	authentication, cloudsave — Authentication (3 sign-in methods) + Cloud Save (Default/Public/Protected player data). Asset Store: Player Account Building Block (via com.unity.starter-kits)	references/player-account.md

Common Architecture Patterns

Pattern 1: Config + State + Server Writes

Used by Battle Pass and Achievements:

1. Definitions in Remote Config (.rc file) — what exists in the game
2. Player state in Cloud Save — per-player progress
3. Writes via Cloud Code — server-authoritative mutations
4. Access Control (.ac file) — block direct player writes to sensitive keys

Pattern 2: Client-Direct Data

Used by Player Account (preferences, display settings):

1. Player data in Cloud Save Default or Public access class
2. Direct client writes — no Cloud Code needed for non-sensitive data

Pattern 3: Competitive Features

Used by Leaderboards and ranked systems:

1. Score submission via Leaderboards API (or through Cloud Code for validation)
2. Rankings retrieved client-side with pagination and player-relative queries

Validation

After writing code for a live game feature:

1. Verify the project compiles without errors.
2. Check that initialization order is correct: UnityServices.InitializeAsync() → Authentication sign-in → service calls.
3. Confirm sensitive data writes (XP, rewards, currency) are routed through Cloud Code, not written directly from the client.
4. Verify Access Control .ac files deny direct player writes to Protected Cloud Save keys.
5. Verify all cloud resource files (.rc, .ac, .ccmr, .lb, .ec) are present and deployable via the Deployment Window.

Deployment Checklist

For any live game feature, deploy these cloud resources via the Deployment Window:

• .rc file — Remote Config entries (game definitions, configs)
• .ac file — Access Control policies (deny direct writes to protected keys)
• .ccmr file — Cloud Code module reference (pointing to the module .sln)
• .lb file — Leaderboard configuration (if using leaderboards)
• .ec file — Economy definitions (if using virtual currencies/items)
• manifest.json — Ensure all required packages are listed with correct versions
• Environment configured in Services > Deployment settings

Detailed References

Service References

• Authentication — sign-in methods, events, profiles, identity providers, code templates: references/authentication.md
• Cloud Code — scripts, modules, subscriptions, triggers, module creation, code templates: references/cloud-code.md
• Cloud Save — access classes, data operations, files, queries, code templates: references/cloud-save.md
• Remote Config — definitions, .rc format, Game Overrides, code templates: references/remote-config.md
• Tooling — Access Control (.ac) policies, Game Overrides (.ugo), URN reference: references/tooling.md
• Deployment — file types, workflow, programmatic API: references/deployment.md
• Services APIs — four client types, service areas, code templates: references/apis.md

Feature Blueprints

• Achievements — full implementation with data models, client code, Cloud Code module, cloud resources: references/achievements.md
• Battle Pass — full implementation with tiered XP, free/premium tracks, Cloud Code module, cloud resources: references/battlepass.md
• Player Account — sign-in flows, identity management, Cloud Save data, code templates: references/player-account.md

Reminders

Before completing, verify:

• Did you use UnityServices.InitializeAsync() → Authentication sign-in → service calls (in that order)?
• Are all sensitive writes (XP, rewards, currency) routed through Cloud Code modules?
• Are all cloud resource files (.rc, .ac, .ccmr) present and deployable?
• Do Cloud Save read access classes match the bucket that was written to?