This folder contains the Game Server SDK for the Unity game engine. The GSDK files are in the PlayFabSdk/MultiplayerAgent folder. The entire GSDK is usable via class PlayFabMultiplayerAgentAPI. There is a sample scene in the MultiplayerServerSample folder that is meant to be used as a guidance when starting up a new project. For a more robust sample, check our gsdksamples repository here.

Yup, PlayFab SDK and GSDK would reside in different folders in your Unity project, thus having no conflict.

You can drag the PlayFabSDK folder to your Unity project. After that, you need to enable the scripring directive ENABLE_PLAYFABSERVER_API on your Build settings, like in this screenshot