Backwards Compatibility Support
Did you already buy your new PS5 console, yet you have tons of video games that you are playing on the PS4 console?
This was announced a long time ago. Sony had made their blog post or page, stating that ‘backwards compatibility’ of the PlayStation 5 console is present, and can play most of the game titles for the PlayStation 4 console.
Most PS4 games can be run on its Game Boost feature, in which it increases your game’s frame rate, making it run fast and smooth on the screen. Please do note that not all PS4 games can run on the PS5, due to the fact that some functions in those games (PS4) may not work properly on the PS5, or even can cause more runtime errors or minimal game crashes or freezes. Also, it is up to the game publishers whether they can add up PS5 support onto their PS4-only platform games. Make sure that your game’s DLC is compatible with PS5 before purchasing it, as said on their last note.
And finally, you must update regularly your PS5 for some security patches and updates.
There are instructions on how to do this, and you can refer to this link below for more details.
Backwards compatibility: PlayStation®4 games playable on PlayStation®5
The PlayStation 5 (PS5) is a home video game console developed by Sony Interactive Entertainment. Announced in 2019 as the successor to the PlayStation 4, the PS5 was released on November 12, 2020 in Australia, Japan, New Zealand, North America, Singapore and South Korea. Worldwide released followed a week later. The PlayStation 5 along with Microsoft’s Xbox Series X and Series S consoles, released the same month, are part of the ninth generation of video game consoles. (Wikipedia)