If you want to play Rare’s new 30 game collection, the Rare Replay , then you are going to need to free up some space on your Xbox One. The game requires a minimum of 11.26 GB free on your hard drive to begin with. However, to play the Xbox 360 games in the collection, you will need even more space free. They aren’t actually on the disk. Instead, by inserting the disk they will be added to your download queue. All in all these titles will take an extra 38 GB of data. The only games that will be available on disk will be games that predate the 360, like Battletoads .
The Rare Replay launches on August 4 for the Xbox One. Be sure to free up some space on your Xbox One hard drive before then.
Source: Gamespot