Ola pessoaal!!

Vamos lá

Crie uma pasta chamada Scripts no seu Assets

La add um C# Script com o nome de PlayerSpawner
e cola esse codigo

Código:


using UnityEngine;
using System.Collections;

public class PlayerSpawner : MonoBehaviour {

  public Transform player;

  void OnServerInitialized(){
      SpawnPlayer ();
  }
  void OnConnectedToServer(){
      SpawnPlayer ();
      }
  void SpawnPlayer(){
      Network.Instantiate (player, transform.position, transform.rotation, 0);
  }
  void OnPlayerDisconnected(NetworkPlayer player){
      Network.RemoveRPCs (player);
      Network.DestroyPlayerObjects (player);
  }
  void OnDisconnectedFromServer(NetworkDisconnection info){
      Network.RemoveRPCs (Network.player);
      Network.DestroyPlayerObjects (Network.player);
      Application.LoadLevel (Application.loadedLevel);
  }
} 

E salva

Crie outro C# Script com o nome de Networking

e cola esse codigo

Código:


using UnityEngine;
using System.Collections;

public class Networking : MonoBehaviour {

  string ServerIP = "127.0.0.1";
  int ServerPort = 30000;

  void OnGUI(){
      if (Network.peerType == NetworkPeerType.Disconnected) {
        if(GUILayout.Button("Connect")){
            Network.Connect(ServerIP, ServerPort);
        }
        if(GUILayout.Button("New Server")){
            Network.InitializeServer(32, ServerPort, false);
        }
            }
      else
      {
        if(GUILayout.Button("Disconnect")){
            Network.Disconnect();
        }
      }
  }
}


 E salva 
Pronto só isso !!