PS Plus Extra, Premium Games Will Be Playable Offline, But Will Require Weekly Validation

Prove it or lose it - Sony’s not going to suddenly mandate online connectivity for the games included in its new PS Plus

PS Plus Members Lose 19 Games in May as Sony Drops PS Plus Collection

The PS Plus Collection: 20 PS4 Classics on the PS5, Ranked

PS Plus Essential, Extra, and Premium March 2023 Games Revealed

GREAT New PS Plus Update! 15 FREE PS+ Extra/Premium Games REVEALED (PlayStation Plus October 2023)

PS Portal FAQ - All Your Questions Answered

Why does Playstation Plus exist? And why is it required to play some games even though I already bought the console and game? - Quora

PlayStation Plus Extra is quite solid, but Premium needs a lot of work

Some PS Plus games already have an expiration date

My Playstation Plus ended but I can still access games I downloaded, why is this? : r/PlayStationPlus

Sony Offers Free Week of PlayStation Plus Premium

Are PS Plus games free forever? - Quora

UPDATE: Your guide to the all-new PlayStation Plus – PlayStation.Blog

PlayStation Plus Extra and Premium now have seven-day free trial

PlayStation Plus Review