The PlayStation®5 console is backward compatible with the overwhelming majority of PlayStation®4 games. That means an amazing collection of thousands of PS4™ games can be played on your PS5™ console.
Backwards Compatibility - PlayStation 5 Guide - IGN
PS5 backwards compatibility confirmed: 99% of PS4 games, 0% of PS3, PS2 and PS1 - YP
Backwards Compatible - PlayStation 4 game compatibility with PS5 - Showcase - ProcessWire Support Forums
PS5 will be backward-compatible with PS4 games, Sony reveals - GameRevolution
Can PS5 play PS4 games and discs? If the new generation Playstation is backward compatible - and how the consoles compare
PS4 Backwards Compatibility: Can You Play PS1, PS2, and PS3 Games on PS4?
Exhaustive PS5 Backwards Compatibility Database Reveals Which Games to Play on Sony's Next-Gen System
Ubisoft PlayStation 5 Backward Compatible PS4 Games
PS5 Backwards Compatibility Database Catalogues Improvements And Performance Of PS4 Games On Sony's New Console - PlayStation Universe
PS5 backwards compatibility guide: PS1, PS2, PS3, PS4, and more
PS5 Backwards Compatibility: How to Play PS4 Games on PS5
PS5 is backward-compatible with 99% of PS4 games tested, Sony says - Polygon
PS5 first details: AMD Ryzen CPU, 8K graphics, SSD, 3D audio, and backwards compatibility with the PS4
Why isn't the Playstation 4 Backwards Compatible? : r/gaming