> For the complete documentation index, see [llms.txt](https://docs.coherence.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.coherence.io/readme.md).

# Welcome

## **coherence 2.1**

**coherence** is a network engine, platform and a series of tools to help anyone create a multiplayer game. Our mission is to give any game developer, regardless of how technical they are, the power to make a connected game.

### Get started

If you would like to get started right away, you can check the [Installation](/getting-started/installation.md) page to learn how to install **coherence in Unity**, set up your Scene, Prefabs, interactions, as well as deploy your project to be shared with your friends.

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[Get the Unity SDK](/getting-started/installation.md)
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### Learn

To learn how to use **coherence**, we recommend you start by exploring the [**package Samples**](/getting-started/samples-and-tutorials/package-samples.md) included right inside the Unity SDK. Or download one of our pre-made Unity projects [First Steps](/getting-started/samples-and-tutorials/first-steps-tutorial.md) or [Campfire](/getting-started/samples-and-tutorials/campfire-project.md), which both come with extensive documentation explaining the thinking behind them.

If you enjoy learning with videos, we have a [playlist of videos](https://www.youtube.com/playlist?list=PLnHFD0m6ywmNY4CEE99U7vkaq2Vrk9FvS) dedicated to getting started with the Unity SDK.

Finally, if you're new to networking you might enjoy our [Beginner's Guide to Networking](/getting-started/samples-and-tutorials/beginners-guide-to-networking.md). This high-level introduction is not coherence-specific, but rather is applicable to any networking technology.

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[Samples and tutorials](/getting-started/samples-and-tutorials.md)
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### Update an existing project

If you are an existing user and looking to update, check out the latest [Release Notes](/support/release-notes.md). And maybe the [SDK Upgrade Guide](/support/upgrading-unity-sdk.md) as well!

## Join the community

* Get help, ask questions and suggest features in our [Community](https://community.coherence.io/)
* Chat with us on [Discord](https://coherence.io/discord)
* Contact us at <devrel@coherence.io>

![](/files/-MYdFT1_1Ocrbqga02t7)