When you launch the Game Center app, it loads up in the start screen some titles which you can tap and get fired up into it's app store's page. Anyone found the pattern of when a game is shown there? Could it be the usage of game center on those games? OR maybe just what's Hot / N&N / Staff's Favs?
I just noticed that apps are only suggested on the iPad version of Game Center app. However on the iPhone, the users have a "Find Game Center Games" in the Games subsection which redirects them so the AppStore app.