Final Fantasy 14: A Realm Reborn, famous MMORPG franchise from Square Enix, will have a free upgrade for existing PS3 users. They can upgrade their PS3 game to the PlayStation 4 version. This offer will continue until the end of 2014 and all you need is just registering the PS3 title to the FF14 account.
Learn how to update your game:
Step 1: On a computer, log into the page MogStation Square Enix administering your account in Final Fantasy 14.
Step 2: Select the account you want to update.
Step 3: A banner will appear offering to update the PS3 for PlayStation 4, click it.
Step 4: Then will appear a text explaining all the details of the transition. Read carefully and click "Next" when finished.
Step 5: A new page will ask you to confirm the update. Check that everything is correct, as the chosen account, and click on "Upgrade".
Step 6: You will now receive a code to redeem on the PlayStation Store.
Step 7: In the PlayStation 4, log into your account from the PlayStation Network and PlayStation Store open.
Step 8: Select "Redeem Codes" in the Store menu.
Step 9: Enter the code you received in Step 6.
Step 10: Okay, now you can download Final Fantasy 14:. Realm Reborn on the PlayStation 4
Note that you can’t use the game on the PlayStation 3 anymore.