LobbyPopupStage stage = null;
      if(!gameStages.isEmpty()) {
        for (LobbyPopupStage gameStage : gameStages) {
          if(gameStage.getLobby().getLobbyId().equals(lobby.getLobbyId())) {
            stage = gameStage;
            break;
          }
        }
      }
      if(stage == null) {
        stage = new LobbyPopupStage(presenter);
        ((LobbyPresenter) presenter).registerLobby(lobby);

        gameStages.add(stage);

        stage.setLobby(lobby);

        stage.setTitle("Lobby - " + lobby.getLobbyName());
        stage.setScene(scene);
        stage.setResizable(false);
      }

      stage.show();