For whatever reason, Sony wasn't able to finish up PlayStation support for the Xperia S before the phone hit store shelves in Europe. Today, though, that placeholder link in the Xperia S app drawer now loads a web page where the PlayStation Store and PS Pocket app can be downloaded. The same goes for the Xperia S's Japanese counterpart, the Acro HD, which launched in late February.
To get your fill of classic 32-bit titles, you'll first need to enable non-Market applications in Settings > Applications, then run "Let's start PS store" in the app tray. Next, download the two apps, which in turn will let you buy and play games. We're seeing around a dozen titles available on our review unit, though some of those are still only playable on the Xperia Play. And it should be noted that you'll need a PlayStation Network or Sony Entertainment Network account to access Sony's mobile gaming catalog.