But after an update to PS5, it ceased to work. Some believe the API for BC white/black list is updated anytime your PS5 connects online.
When Sony was contacted about this, they said it was a decision by the publisher, Konami.
P.T. is not playable on PlayStation 5
There was backward compatibility here. It’s gone now.
https://www.polygon.com/2020/11/6/21549 ... ystation-5
Here’s the strange thing, though: At one point over the past two weeks, it was both transferable and playable on PS5. I played P.T. on my PS5 in late October, the day after I received my review unit. But it appears that when the PlayStation 5 launches on Nov. 12, it won’t play P.T. through backward compatibility.
P.T. was the first PS4 title I tested through backward compatibility on PS5. On Oct. 24, I transferred my copy of P.T. to and played the game on my PS5, picking up from a recent save that carried over from PS4. Then I restarted P.T. from the beginning, and played through a bit more. It seemed to work fine. In fact, the 4K screenshot at the top of this post was captured from the PS5 review unit that Sony sent me.
But in the days leading up to Sony’s PS5 review embargo, the situation changed. P.T. is now listed as a “Playable on PS4” title, meaning it can’t be played on PS5.
And after being forced to do a factory reset of my PS5 review unit this week, which deleted all game content from the system, I learned I was no longer able to transfer P.T. from PS4 to PS5. (My colleague Russ Frushtick still has his transferred copy of P.T. sitting on his PS5 SSD.)
When it was playable, P.T. appeared to perform on PS5 just as it did on PS4. I did not complete a full playthrough of the demo, but I experienced no noticeable issues during the 10 minutes in which I tested the game.
Reached for comment, a Sony spokesperson told Polygon that the change to P.T.’s backward compatibility on PS5 “was a publisher decision.”
Sony Confirms P.T. Was Backwards Compatible & Playable On PS5 Until Konami Interfered
P.T. on PS5 tested.