Any good/detailed Google Play Games Real Time Multiplayer setup tutorial for android?

This will help you https://www.raywenderlich.com/86040/creating-cross-platform-multiplayer-game-unity-part-1

I am also looking for a similar tutorial.

For the listener, you need to inherent from RealTimeMultiplayerListener (which is where your listener is)

 public class MultiplayerScript : MonoBehaviour, RealTimeMultiplayerListener

After adding that to your code, your code editor (Microsoft Visual Studio in my case), it asked me to import some stuff:

  "using GooglePlayGames.BasicApi.Multiplayer;"

and then it added all the relative methods:

 onRoomsetupprogress, onRoomConnected etc...

If you find any nice tutorials, please let me know.

https://www.youtube.com/watch?v=fM87eDzhalc - up to date tutorial

Below I'm put Example For create Listener Instance For RealTimeMultiplayer

 using UnityEngine;
 using System.Collections;
 using System.Collections.Generic;
 using GooglePlayGames;
 using GooglePlayGames.BasicApi;
 using UnityEngine.SocialPlatforms;
 using GooglePlayGames.BasicApi.Multiplayer;
 using System;
 
     public class GPGLogin : RealTimeMultiplayerListener
     {
       
         private static bool showingWaitingRoom = false;
 
         //RealTimeMultiplayer Instance For calling methods listener
         static GPGLogin listener = null;
        
         public static void RandomMatch()
         {
            
             listener = new GPGLogin();//Here Your Listener Instance 
             const int MinOpponents = 1, MaxOpponents = 2;
             const int GameVariant = 0;
             PlayGamesPlatform.Instance.RealTime.CreateQuickGame(MinOpponents, MaxOpponents,
                         GameVariant, listener);
         }
 
         public void OnRoomSetupProgress(float percent)
         {
             if (!showingWaitingRoom)
             {
                 showingWaitingRoom = true;
                 PlayGamesPlatform.Instance.RealTime.ShowWaitingRoomUI()
             }
         }
 
         public void OnRoomConnected(bool success)
         {
             if (success)
             {
                  //Room Connected success 
                  //you can put your code After the Room connected
             }
             else
             {
                     //Room Connection failed 
                  //you can put your code After the Room connection failed
             }
         }
 
         public void OnLeftRoom()
         {
             throw new NotImplementedException();
         }
 
         public void OnParticipantLeft(Participant participant)
         {
             throw new NotImplementedException();
         }
 
         public void OnPeersConnected(string[] participantIds)
         {
             throw new NotImplementedException();
         }
 
         public void OnPeersDisconnected(string[] participantIds)
         {
             throw new NotImplementedException();
         }
 
         public void OnRealTimeMessageReceived(bool isReliable, string senderId, byte[] data)
         {
             //here You Receive the Message From Opponent user
         }
     }
 

It's been late but here is the good multiplayer tutorial using google play games

http://bhattakash.com/creating-multiplayer-game-with-unity/

and a good Asset too: http://u3d.as/TGr