Microsoft has just launched a new promotion called the Ultimate Game Sale on Xbox. Both Xbox One and Xbox 360 owners will have a chance to grab some discounted titles, including Call of Duty: Advanced Warfare, Sniper Elite 3, Alien: Isolation, Middle-earth: Shadow of Mordor and many more. Discounts of up to 85% are available (if you've got Gold, otherwise they're not quite as generous). Head here or switch on your console for more details.