# Competitive games

> Build a competitive multiplayer game using the recommended Unity multiplayer services and packages.

In fast-paced competitive games, multiplayer gameplay involves constantly exchanging player actions and game state information in real time. Common games types are first-person shooters, fighting games, and battle royales.

To automatically install all the recommended Unity multiplayer services and packages for a competitive multiplayer game, use the [Multiplayer Center](../multiplayer-center).

## Connecting players

Recommended package: [Multiplayer Services SDK](/mps-sdk.md).

The Multiplayer Services SDK provides a unified API to access Unity's multiplayer services, including multiplayer session management, hosting game sessions, matching players together, browsing games and inviting friends.

## Networking

Recommended packages: [Netcode for Entities](https://docs.unity3d.com/Packages/com.unity.netcode@latest) and [Unity Transport](https://docs.unity3d.com/Packages/com.unity.transport@latest).

Because competitive games often have many players and require real-time synchronization of all game state information, you will likely need to use a client-server architecture where a [dedicated server](https://docs.unity3d.com/Documentation/Manual/dedicated-server.html) manages the game state and clients connect to it. Netcode for Entities is built on the Entity Component System (ECS) and provides high-performance networking for large-scale multiplayer games with a server-authoritative architecture that supports client prediction and lag compensation.

Unity Transport is the default transport layer for Netcode for Entities and provides a low-level API for sending and receiving data over the network. It supports both reliable and unreliable communication, which can be useful for different types of game state information in a competitive multiplayer game.

## Development and testing

Recommended package: [Multiplayer Play Mode](https://docs.unity3d.com/Packages/com.unity.multiplayer.playmode@latest).

The Multiplayer Play Mode package allows you to test your multiplayer game in the Unity Editor by simulating multiple players and network conditions on a single local development machine. Netcode for Entities also includes its own testing tools such as [thin clients](https://docs.unity3d.com/Packages/com.unity.netcode@latest?subfolder=/manual/testing/thin-clients.html) and a [Network Profiler](https://docs.unity3d.com/Packages/com.unity.netcode@latest?subfolder=/manual/testing/network-profiler.html).

## Additional resources

* [Multiplayer Center](../multiplayer-center)