Only games? And do these games have anything in common (like using some common account system)? Any games in particular?
Games are just apps, so it would be very strange indeed if all games were affected, no other apps, and there is nothing in common between the games you have. So I have to assume there is some common factor between the apps that are afffected, but we'll need more information from you to have any hope of figuring it out.
(Remember that we only know what you tell us, not what you know).