https://www.wciplay.com/en/articles-ps3-ps4-ps5-crossplay
Sony PlayStation 4 games with Playstation 5 crossplay are becoming more popular as the new console is released.

Your friends will be able to find you in these PSN games so that you can play together seamlessly across the various consoles.

The Sony  PlayStation Network ‌   is the largest online gaming service in the world, which enables  crossplay between PSN and PC as well as between the different  Playstation versions.

This will  show all of your downloaded titles as well as a new tab for Online  Features that lists all available games with Playstation crossplay.

Fortnite Play with friends on the PSN, PC or Mac.

This  is an action building game where players save a world corrupted by  monsters and villains.

Another PS4 with PS5 crossplay game is the recently released Dragon Ball Fighter Z

This  is a fighting game where players can experience the most iconic moments  from all the different series of this popular Japanese franchise, as  well as creating their perfect team to combat and defeat other fighters  in intense battles.

Red Dead Redemption II

Red Dead Redemption II is an action-adventure game where players can  live and feel the adrenaline of their characters as they explore these  vast, atmospheric open worlds that are full of life.

In order to survive  in these dangerous lands, you need to have a combination of skill,  stealth, and confrontation!

Other PS4 - PS5 crossplay games

Sony  announced that they are opening up cross-play functionality for their  Playstation 4 and Playstation 5 consoles.