http://youtu.be/AcfQ_hF-R9I
Didn't even think about this until now but you XB1 guys should make sure you have your "family" full. If you have a full family of 10 and you each bough separate games you could all play each other's games so long as only one of you was playing the game at a time. So instead of buying an old used game just play your "family" games for free.