anchor.diff:      return GameBridge.create([msg.clientId]).then((game) {
         _games[gameId] = game;
         print('New game $gameId created by ${msg.clientId}');
  +      game.output.listen((msg) {
  +        _output.add(msg);
  +      });
       });
     }
     
  
positive.code:   final SendPort _input;
    final ReceivePort _output;
    
    static Future create([List<String> args]) {
      args = args == null ? [] : args;
      var spawned = new Completer();
  
negative.code:   }
    
    GameBridge.fromIsolate(this._output, this._input) {
      _output.listen((msg) {
        _lineBack.add(msg);
      });
    }
    
  