> ## 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.

# Concepts

> Reference and concepts for Multiplayer Activity (MPA) in the XBOX Game Development Kit (XBOX Services). Includes concepts and API guidance.

Explore concepts topics for XBOX game development.

> [card] [Activities](https://docs.xbox.com/services/xbox-services/multiplayer/mpa/concepts/live-mpa-activities.md)
>
> This topic describes advertising joinable, multiplayer experiences to other players.

> [card] [Multiplayer activity (mpa) concepts](https://docs.xbox.com/services/xbox-services/multiplayer/mpa/concepts/live-mpa-concepts-nav.md)
>
> This section describes the concepts of the Multiplayer Activity (MPA) feature.

> [card] [Send a request for another player to](https://docs.xbox.com/services/xbox-services/multiplayer/mpa/concepts/live-mpa-invites.md)
>
> This topic describes how to send a request for another player to join a multiplayer experience.

> [card] [Integration with PlayFab lobby & match](https://docs.xbox.com/services/xbox-services/multiplayer/mpa/concepts/live-mpa-playfab-integration.md)
>
> This topic describes how to integrate MPA with PlayFab Lobby and Match services.

> [card] [Recent players](https://docs.xbox.com/services/xbox-services/multiplayer/mpa/concepts/live-mpa-recent-players.md)
>
> This topic describes how interactions with other players are recorded to build player relationships or report feedback.

> [card] [Mpa invite and activity troubleshooting](https://docs.xbox.com/services/xbox-services/multiplayer/mpa/concepts/live-mpa-troubleshooting.md)
>
> The following guide is a starting point to assist titles with troubleshooting of invite and activity functionality using the MPA service.

## See also

* [How to](https://docs.xbox.com/services/xbox-services/multiplayer/mpa/how-to/index.md)


## Related topics

- [Concepts](https://docs.xbox.com/services/xbox-services/multiplayer/invites/concepts/index.md)