Every day until December 31 will be discounted to the surprise of game content such as arcade or expansions that will be purchased by the end of the day. Today is the turn of the Live Arcade Perfect Dark 50% discount from 800MP to 400 Microsoft Points ( web link ), while for those who want to decorate your avatar is the UAV Modern Warfare 2 to 120MP ( web link ). In addition to remind you that all offers are valid on Christmas lists this other news , we inform you that the content of tomorrow will be granted after a legendary live arcade.