There are 4 minis games that you can download from the Sony PS Facebook page. You have to do minor things like click on the "like" button, or on the twitter button (dont need to actually log on) to get the codes. The games are:
Velocity
Wizorb
Breakquest
Canabalt
https://www.facebook.com/SonyPlaystation/app_538718762805824
Note: The promotion is run by SCEE so doesn't seem to be available to NA gamers.
<a href="https://psnprofiles.com/fauzman"><img src="https://card.psnprofiles.com/2/fauzman.png" border="0"></a>