For its Gold members only, Xbox Live Marketplace offers downloads of Valiant Hearts: The Great War for Xbox One for free. (Log in to see this price.) That's $15 off list and the lowest total price we could find. Deal ends October 31.
For its Gold members only, Xbox Live Marketplace offers downloads of Metal Gear Solid V: Ground Zeroes for Xbox 360 for free. That's $6 under our mention from June and the lowest price we've seen. (It's a current low for a physical copy by $16.) Deal ends October 15.