I'm afraid that native PS4 ports of PS3 games won't be included in PS+ Extra. Looks like they are in PS+ Deluxe / Premium. : r/PlayStationPlus
Amazon.com: PS3 320 GB PlayStation Plus Instant Game Collection Bundle : Video Games
Amazon.com: PS3 250 GB Uncharted 3 and PS Plus Bundle : Video Games
All 4 sly cooper games possibly coming to PS+ upgrade. : r/Slycooper
PS Plus Oversight Is a Bummer for PS3, PS Vita Owners | Push Square
PlayStation Plus Will Stop Offering Free Games for PS3 and Vita
Amazon.com: Sony PS Plus 12 Month Subscription Card Live (3000133) : Video Games
PS3™ | About PlayStation®Plus
PlayStation Plus Game Catalog lineup for October: Grand Theft Auto: Vice City – The Definitive Edition, Dragon Quest XI S: Echoes of an Elusive Age, Assassin's Creed Odyssey – PlayStation.Blog
PlayStation Plus Free Games of January 2015 for PS4, PS3, and Vita - GameSpot
PlayStation Plus dropping PS3 and Vita games in 2019 (update) - Polygon
PS Plus free games list for November 2022
UPDATE: All-new PlayStation Plus launches in June with 700+ games and more value than ever – PlayStation.Blog
PlayStation Plus Subscribers: Your April Content is Almost Here!PS3Blog.net
UPDATE: Your guide to the all-new PlayStation Plus – PlayStation.Blog
PlayStation Plus Premium review: Is the top tier worth it right now? | Laptop Mag
The XMB of streamed PS3 games now say PS Plus game streaming instead of PlayStation Now : r/PlayStationPlus
3 Month Playstation Plus Membership (PS+) (USA) | /PS3/PS4/PS5 | CDKeys
All Free PS Plus Games For PS3, PS Vita, PS4, PS5 - Every PS Plus Game Ever - PlayStation Universe
UPDATE: Your guide to the all-new PlayStation Plus – PlayStation.Blog
25 Best PS3 Games on PlayStation 5 [PS+ Premium] - YouTube