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.
PS5 first details: AMD Ryzen CPU, 8K graphics, SSD, 3D audio, and backwards compatibility with the PS4
PS5's PS4 backward compatibility works like a charm - Polygon
Compatibility between PS4 and PS5 – the ultimate guide to PlayStation 5 game compatibility - AimControllers
Is the PS5 backwards compatible with PS2, PS3, and PS4 games?
Is the PS5 backward compatible with PlayStation 2, PlayStation 3 or PlayStation 4 games?
Ask PlayStation on X: Discover the 4,000+ PS4 games that are playable on PS5 consoles via backwards compatibility. / X
Playstation 3 Backward Compatibility (PS2 Playable)
Sony Confirms PS4 to PS5 Save Transfers, Reveals Incompatible PS4 Games - IGN
The PS5 can't play these 'PS4 Only' games - GameRevolution
PS5 backwards compatibility list: Which PS4 games will be backwards compatible with PlayStation 5?