Microsoft have made 8 new games available for backwards compatibility on the Xbox One. The standout game of the new list is Fallout:New Vegas, which didnt make it into the Top 5 of the most requested games when Microsoft asked the Xbox community which games they would most like to see on the Xbox One, but it did make the top 9 sitting at number 9.
The other games announced are;
Dungeons & Dragons: Chronicles of Mystaria
I Am Alive
Joe Danger Special Edition
Red Faction Battlegrounds
For a full list of the backwards compatible titles available, you can check it here