How to Play PS3 Games on the PS4 (with Pictures) - wikiHow
Sony: PS3 and PS4 cross-play is 'technically possible' (update) - Polygon
Backwards Compatibility - PlayStation 4 Wiki Guide - IGN
PlayStation 4: PS3 Discs Do Not Work on the PS4
Is the PS5 backwards compatible with PS2, PS3, and PS4 games?
Can You Play PS3 Games On PS4?
Amazon.com: EJGAME Controller Adapter Converter Compatible with PS5/PS4/PS3/Switch/PC,Makes PS5/PS4/Xbox/Switch Joy Con Controllers Compatible with Your Switch/PS5/PS4 Console : Video Games
I Made my PS4 Backwards Compatible!! (It's about time...) - YouTube
Can You Play PS3 Games on a PS4?
Sony commits to supporting the PS4 longer than it did the PS3 | TechSpot
How to Use PS3 Controller on PS4 (Good Tips)
Can You Play PS3 Games On PS4? - PlayStation Universe
PS4 backwards compatibility: Can You Play PS1, PS2, and PS3 Games on PS4?
Backward compatibility: PS4 games playable on PS5 consoles
How to Play PS3 Games on PS4 - Backwards Compatibility Explained - Appuals.com
Is PS5 Backward Compatible: Does it Play PS1, PS2, PS3, and PS4 Games? - PlayStation LifeStyle
Is The PS4 Backwards Compatible?
PS5 will be backward-compatible with 'almost all' of the best PS4 games at launch | TechRadar