@SPArchaeologist I bought GTA IV somedays ago, when it was launched. It requires its DVD, internet connection, an account on Microsoft's website, perhaps another account on Xbox's website and a whole hour just to install it
then, if you mistakenly try to play it, it will always require its DVD to be inside your PC's DVD player, just to start it.
Then microsoft allows you to play a game, in which everything is authentic
I un-installed the game that evening.