There was an announcement today from Major Nelson's site (Site Url) that Lost Odyssey is free on the Xbox store until Dec 31st 2016. Lost Odyssey is fully backward compatible and playable on a Xbox 1.
I really enjoyed Lost Odyssey the first time I played the game. I recommend any who enjoys old school rpgs to pick up the game.
Edit: Blue Dragon is now also backward compatible and available from the Xbox store but not for free thou.