Sony is apparently sending out free credit to select PSN users so if you have registered for PlayStation Network emails, make sure to check the inbox to see if Sony has sent any free credit to your account.
This offer is applicable to the US only and seems to coincide with the ongoing PlayStation Flash Sale. The code that is given with this promotion will expire on October 5th as seen in the image.
I checked my email and sure enough, there was the code given by Sony. It is hard to miss it since the email title reads: “Here’s $10 on us + special PS Store deal.” If you have received a similar email, don’t forget to redeem the code given in it.
If you have a PSN account outside the US region, then you are out of luck. This offer is also limited right now and there doesn’t appear to be that many users who have received it. It is not clear how the credit is being given since the criteria to pick them is never explained. Just consider it a lucky gift from Sony and use it to get any game from the recent Flash sale.
Let us know if you have managed to get a free $10 credit code from PSN in the comments below.