Keeping the tradition alive, Microsoft has announced this weeks enter into the Xbox 360 Deal of the Week. Last week we saw Braid, arguably one of the best XBLA titles ever made, at a discounted price. This week Microsoft is giving us the Mission Mode add-on for Ninja Gaiden II for 560 MS Points.

Introducing Mission Mode, a brand-new gameplay expansion for the acclaimed action game Ninja Gaiden II. In this all new game mode, challenge your skills in self-contained missions featuring trials and tribulations not found in the standard story mode. Karma Attack missions task you with obtaining the highest score, while Survival missions give you a single weapon to fight off as many enemies as possible. Take your high scores online with Xbox LIVE and compete with players around the world on the mission leaderboards! There are no refunds for this item. For more information, see www.xbox.com/live/accounts.

This special discount price is only available to Xbox LIVE Gold members.