> ## Documentation Index
> Fetch the complete documentation index at: https://docs.xbox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Real-time messages for Lobby and Matchmaking APIs

> Overview of PlayFab Game Server SDKs (GSDK) for Multiplayer Servers, including Unity, C++ for Windows and Linux, C#, Java, and Unreal Engine integrations.

This topic lists the different flavors of PlayFab Multiplayer Game Server SDKs (GSDKs) we have today.

## Download links

Note that these SDKs are for the servers.

* [Game Server SDK GitHub repo for all libraries](https://github.com/PlayFab/gsdk)
* [Unity Game Server SDK (GSDK)](https://github.com/PlayFab/gsdk/tree/master/UnityGsdk)
* [C++ Game Server SDK (GSDK) for Windows servers via NuGet](https://www.nuget.org/packages/com.playfab.cppgsdk.v140)
* [C# Game Server SDK (GSDK) for Windows servers via NuGet](https://www.nuget.org/packages/com.playfab.csharpgsdk)
* [Java Game Server SDK (GSDK) for Windows and Linux servers via Maven](https://mvnrepository.com/artifact/com.playfab/gameserverSDK)

> [!TIP]
>
> Unsure if this is the SDK you need? See [SDKs overview - PlayFab SDK, Party SDK, Multiplayer Game Server SDK](https://docs.xbox.com/services/playfab/sdks/sdk-overview.md).

## See also

* [SDKs overview](https://docs.xbox.com/services/playfab/sdks/sdk-overview.md)


## Related topics

- [Real-time messages for Lobby and Matchmaking APIs](https://docs.xbox.com/services/playfab/multiplayer/real-time-messages/overview.md)