gm.js

function Game(type) {
  this.type = type;  
  this.board = [0,0,0];
}

var app = angular.module('xo', []);

app.factory('game', function () {
  return function (type) {
    return new Game(type);
  }
});

app.controller('GameCtrl', ['game', function ($scope, game) {
  $scope.game = game('classic');
  $scope.board = game.getBoard();
}]);