def create_game(self, map_name):
    """Create a game for the agents to join.

    Args:
      map_name: The map to use.
    """
    map_inst = maps.get(map_name)
    map_data = map_inst.data(self._run_config)
    if map_name not in self._saved_maps:
      for controller in self._controllers:
        controller.save_map(map_inst.path, map_data)
      self._saved_maps.add(map_name)

    # Form the create game message.
    create = sc_pb.RequestCreateGame(
        local_map=sc_pb.LocalMap(map_path=map_inst.path),
        disable_fog=False)

    # Set up for two agents.
    for _ in range(self._num_agents):
      create.player_setup.add(type=sc_pb.Participant)

    # Create the game.
    self._controllers[0].create_game(create)