[/img]As just announced by Xbox’s own Major Nelson, two more games are getting added to the Backward Compatibility list for Xbox One starting today. The two games are the first Gears of War and Shadow Complex. The two additions bring the total number of Backward Compatible games to 23.
If you are an Xbox Preview member, these two games will be playable on your Xbox One starting today. If you are not a Preview member, then you will have to wait until the Backward Compatibility program launches publicly later this Fall. When the public launch does happen, all of the games on the Backward Compatibility list will be available for everyone to play.
Source: TheTechGame.com