“I heard you can play the PS3 Call of Duty Ghosts on the PS4 if you update it. How do I play my PS3 COD Ghosts disc on the PS4?”
For a limited time you can download the PS4 digital version of a few selected games purchased for the PS3. But it’s not free, it’ll set you back 10 bucks.
So here’s how it works, for a limited time, gamers who purchased the PS3 game discs for Call of Duty Ghosts, Assassin’s Creed IV Black Flag and Injustice: Gods Among Us will receive a code to redeem at the Playstation Store. You’ll also need to insert the PS3 game disc into the PS4 for this to work so don’t pack away the game just yet.
If you purchased the digital version of those three games on the PS3 you do not need a redeem code to get the discounted copy on the PS4. Simply log into the Playstation Store on the PS4 using the same account that was used to purchased those games on the PS3.
If you need step-by-step instructions go here.