I was just reading through Twitter and @PlayStation, and they posted a link to a code that is multi-use for a free game called "Free Realms". I haven't played it yet, but as long as this helps 1 person out, I'm happy.
Enter this code in the redeem code field
I think this code is North America Only (worked fine on my Canadian account, so it will work on US accounts). If it does work on EU and UK accounts, feel free to let us know.
EU/UK Users. Click the link and it will generate a EU/UK code for you :P