The original 2009 PS3 version of Demon's Souls is considered the origin of the "Soulslike" genre. While a "free" PKG (PlayStation Package) file might be found online, users should be aware of the legal and technical landscape before proceeding. Acquisition Options

Demon’s Souls is the intellectual property of Sony Interactive Entertainment and FromSoftware. It is a commercial product protected by international copyright laws.

It's worth noting that a remake of "Demon's Souls" was released for the PlayStation 5 in 2020. This version offers updated graphics and gameplay and might be available for purchase.

For those seeking to play Demon's Souls without breaking the bank or resorting to piracy, there are legitimate alternatives. The game has been re-released as part of the PlayStation Plus Classics line and is available for purchase on newer consoles like the PlayStation 5, often with enhanced graphics and performance.