public IGame Build(IGameOptions gameOptions = null)
{
LoadAreas();
LoadCommands();
_startup.ConfigureCommands(this);
_serviceCollection.AddSingleton <IGame, Game>(services => new Game(services.GetService <ICommander>(), GameServices, _commands, _globalCommands, _areas, gameOptions ?? new GameOptions()));
GameServices = _serviceCollection.BuildServiceProvider();
var game = GameServices.GetService <IGame>();
_startup.ConfigureGame(game);
GameServices.GetRequiredService <ICommander>().OnGameCreated(game);
return(game);
}