Final Fantasy XIII, Final Fantasy XIII-2 and Lightning Returns: Final Fantasy XIII are all making their way from one generation to another via Backward Compatibility, and all three are set to be Xbox One X enhanced. The trio of titles is also joined by the Xbox One X enhancement patch being added to an already compatible game, Civilization Revolution. To date, we've got 32 original Xbox games, more than 500 backward compatible 360 titles, with 25 of those enhanced for Xbox One X.
To see the full list of old-gen games that have been made available for the Xbox One head here.