Regarding backwards compatibility with the PS4 (from the official PlayStation Blog) : r/PS5
PS4 Update : PS1 & PS2 Backwards Compatibility - YouTube
Sony Teases PS1/PS2 Backwards Compatibility In PS4 Customer Survey - SlashGear
Amazon.com: Brook Wingman PS2 Starry Blue Converter - Special Wireless Version of PS4/3 to PS2/1, Retro Consoles Converter on PS2/ PS1/PS Classic Consoles, for PS Retro Consoles (Starry Blue) : Video Games
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PS4 Backwards Compatibility: Can You Play PS1, PS2, and PS3 Games on PS4?
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PS4 Backwards Compatibility: Can You Play PS1, PS2, and PS3 Games on PS4?
Ubisoft Says PlayStation 5 Is Not Backwards Compatible With PS1, PS2, or PS3 Games
RUMOR: PlayStation 5 is Backwards Compatible with PS1/PS2/PS3/PS4 - FandomWire
PS4 SERÁ RETROCOMPATIBLE CON LOS JUEGOS DE PS3 PS2 PS1 EN 2018 - YouTube
PlayStation 5 backwards compatible with most PS4 titles, but nothing older | GamesIndustry.biz
Rumour: Playstation 5 To Have Backwards Compatibility with PS1, PS2, PS3 & PS4 - Fextralife
PS4 to get PS1 and PS2 backwards compatibility | Trusted Reviews
Is PS5 Backward Compatible: Does it Play PS1, PS2, PS3, and PS4 Games?
PS5 Console Backwards Compatibility for PS1, PS2, PS3, PS4 confirmed by Ubisoft? - Daily Star
PS5 Backwards Compatibility for PS4, PS3, PS2, PS1, PSP...
PS4 to get local backwards compatibility for PS1 and PS2 games? | KitGuru
Is The PS4 Backwards Compatible?
Why PS1 and PS2 discs on PS4 doesn't sound so crazy | VentureBeat
PS5 Won't Support PS3, PS2 Or PS1 Games, Sony Says
PS4 May Be Able To Play PS1 & PS2 Games Soon » Fanboy.com
Sony makes it official: PlayStation 5 won't natively support PS1, PS2, PS3 | Ars Technica
Is the PS5 backward compatible with PlayStation 2, PlayStation 3 or PlayStation 4 games? | Sporting News
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PS4 Backwards Compatibility: Can You Play PS1, PS2, and PS3 Games on PS4?
Is The PS4 Backwards Compatible?
Poll: How Much Does PS5 Backwards Compatibility Matter to You? | Push Square
PS5 Rumored To Have Backwards Compatibility For PS1, PS2, PS3, and PS4
