function Session() {
	var game = JSON.parse(localStorage.getItem('game'));

	return {
		hasSavedGame: hasSavedGame,
		save : save
	};

	function hasSavedGame() {
		return game != undefined;
	}

	function update(state) {
		game = state;
	}

	function save() {
		localStorage.setItem('game', game);
	}
}