The "Gnarly Repack" is a community-optimized version of Demon's Souls designed for the RPCS3 emulator. It typically comes pre-patched, often featuring enhancements like unlocked frame rates (60+ FPS), 4K resolution patches, and pre-configured settings to make the setup process smoother.
The Ultimate Guide to Demon’s Souls Multiplayer on RPCS3: Navigating the Gnarly Reality of Emulated Online Play
Happy hunting, Slayer of Demons. May your connection be stable and your summons successful.
: System software file ( PS3UPDAT.PUP ) via the PlayStation Support Portal.
Can I play the RPCS3 version entirely in co-op? : r/demonssouls