Guys, for anyone wanting an Xbone and is not fussed regarding 4k this is a great deal! Hope this is not a duplicate post. couldn't find it when I searched.
'Name your Game' choice is a digital version of one of the following:
Rare Replay, Forza 6, Rise of the Tomb Raider, Gears of War Ultimate Edition.
Currys don't keep games in store so people can reserve the console only and in store they will order the free game.
Thanks to the above members for adding essential details!