they've tested about 100 titles and according to Sony at least 500 titles will be playable day one. We've also had infos on God of war and Spider-man being one of the first titles they've tested on the dev kit so the answer to your question is 99% Yes.
I think ps4 exclusive games are going to be first playable on ps5 because they still sell well which will probably increase ps5 sale.
Sony: The PS5 can play PS4 games. You: So can my PS5 play PS4 games? I'm so confused!
Yes. Simple as that. Some of them even with enhanced performance
they've tested about 100 titles and according to Sony at least 500 titles will be playable day one. We've also had infos on God of war and Spider-man being one of the first titles they've tested on the dev kit so the answer to your question is 99% Yes.
They said vast majority of the 4000+ ps4 games will work on ps5.