Trophies for PS1 and PSP classics are "optional for developers"
PS1 Classic Games - Price - Trophies - New Features - Crossbuy PS4, PS5 - YouTube
Platinum Game Services - PlayStation Trophies & Xbox Achievements | Facebook
PlayStation Exclusives On PC Would Be Better With Trophies
Syphon Filter 3 trophies on PS Plus complete PS1 classic trilogy, syphon filter 3 - thirstymag.com
PlayStation Classics Finally Getting Trophy Support Is A Long Time Coming
PlayStation Slowly Rolling Out Trophies Support For PS Classics, Multiple Games Supported : r/PS4
PS Plus Premium adds trophy support to classic games | GamesRadar+
Trophies | PlayStation Wiki | Fandom
PS Plus Premium version of PSP Classic finally adds unique trophy list
PS1 Classic Trophy Lists for PS4 and PS5 Hit PSN Ahead of PS Plus Premium Release Date
New PS1 & PSP Platinum Games - New Patch Added Trophy Support on PS Plus Classic Game PS4, PS5 - YouTube
PS Plus guide: all PS1, PSP games with trophy support (December 2023)
PS Plus – PS1 Classics Overview and Analysis | Qualbert
PlayStation classic Syphon Filter will have trophies on PS Plus | Eurogamer.net
Sony Quietly Adds Trophies to Another PS Plus Premium Classic | Push Square
PlayStation classic Syphon Filter will have trophies on PS Plus, syphon filter - thirstymag.com
Two More PS Plus Premium Classics Get Trophies
PlayStation classic Syphon Filter will have trophies on PS Plus, syphon filter - thirstymag.com
PS Plus Premium PS1 Game Trophy Lists
A PS Plus Classic game has had trophy support patched in, months after being added | VGC
Do PS Plus Premium's Classic Games Need Trophies for You to Play Them? | Push Square
