One of the cooler aspects of the Xbox One may turn out to be somewhat of a headache for gamers, it seems. All Xbox One games will require a mandatory installation onto the system’s hard drive, but afterwards you’ll be able to play the game from your HDD without needing the disk. While it’s fantastic that the consoles are catching up to PCs in regards to ease of access, this does leave the major question of how will pre-owned games work out?